WO2013139253A1

WO2013139253A1 - Method for reducing gas resistance or liquid resistance and a material thereof

Info

Publication number: WO2013139253A1
Application number: PCT/CN2013/072865
Authority: WO
Inventors: 周向进
Original assignee: Zhou Xiangjin
Priority date: 2012-03-19
Filing date: 2013-03-19
Publication date: 2013-09-26
Also published as: TW201338947A; CN103321991A

Abstract

Provided are a method for reducing gas resistance or liquid resistance and a material. All or part of the surface of the material is arranged with regular-shaped or irregular-shaped pits, the average depth of the pits being 0.2 mm to 0.5mm, and the average diameter being 2.5 mm to 6.0 mm. The method comprises: using the foregoing material on the surface of an object that moves relatively to gas or liquid; when the material is a sheet material, one side of the material is provided with an adhesive coating that may stick and wrap the surface of the object, thereby reducing the gas or liquid resistance of the object.

Description

Technical field

The present invention relates to a method of reducing gas resistance or liquid resistance and a material thereof. It is mainly used in transportation > transportation, aviation, aerospace, shipping and construction, and machining, casting, and manufacturing of gold, genus, polymer materials, glass, rubber (tires), building materials, surface treatment technology. Related. Background technique

The faster the car, the greater the air resistance. The power of trains, especially high-speed trains, is mainly used to overcome air resistance. Because the plane is out of the ground, the resistance it needs to overcome when flying is almost all air resistance. If the air resistance of these vehicles can be reduced by 10-30%, the contribution to energy conservation and transportation efficiency in the whole society will be enormous.

It has been shown that, under the same test conditions, the golf ball with a pit on the surface has a flight distance that is 30% longer than that of a golf ball with a smooth surface. At high speeds, the air resistance of a golf ball with a concave surface is about 30% smaller than that of a golf ball with a smooth surface. Summary of the invention

Manufacture of continuous or regular pits on surfaces that move (or rotate) objects, such as: product surfaces, high-rise building surfaces, underwater building surfaces, and pipe inner walls (this kind of pit is similar to a golf surface The method of the dimples solves the problem of reducing the air resistance of moving objects such as cars, trains, airplanes, rockets, etc., and solves the problem of reducing the water flow resistance of the underwater part of the ship and reducing the resistance of the gas or liquid conveyed by the pipeline. The problem, as well as solving the problem of reducing the thrust of the wind on the high-rise buildings, solves the problem of reducing the impact of water flow on underwater structures such as piers. It has the effect of saving energy, increasing speed (or reducing the impact load of wind power on buildings), and increasing the load capacity of transportation (carrying).

Technical principle: When moving at high speed, the fluid (gas or liquid) in the pit on the surface of the moving object will form a full flow. The eddy current in the pit can reduce the friction between the fluid and the surface of the moving object like a ball. The eddy current can also reduce the moving object. Negative pressure in the tail region reduces fluid resistance.

The size, shape, depth, and regularity of the pits on the surface of a moving object (product) that resemble a golf ball surface have a large influence on the magnitude of the resistance of the moving object in the fluid (gas or liquid). The contribution of these influencing factors to resistance is related to the size, volume, shape of the moving object, and the relative velocity of the moving object to the gas or liquid. Wind tunnel tests or water tunnel tests can test different relative velocities and moving object volumes, shapes and moving objects The parameters such as the size, shape, depth, and regularity of the pits on the surface interact and affect the correspondence of resistance changes. Designers can get optimized design parameters through experimentation. It is certain that the degree of the pit on the surface of the golf ball is directly transplanted (manufactured) to the surface of the moving object, and the moving object can be lowered in the fluid (gas

Surfaces of different parts of the same moving object (product) can be selected with different sizes, different shades, different regularities, and even different shapes of pits. The faster the relative velocity of the airflow and the greater the air resistance, the more effective the effect of reducing the drag by the method of the present invention. The surface of the pit may not be used on surfaces that are not in relative motion with the fluid or that have relatively little relative motion. For example: The leading edge surface of an aircraft wing, which is made into a pit similar to a golf ball surface, is significant for reducing the air resistance of the aircraft and can even reduce the design strength of the wing. The same is true for the leading edge of the jet engine intake. The nose and fuselage of the large aircraft, the leading edge and fuselage of the wing, the upper and lower parts of the wing, and the abdomen and top of the fuselage can be used with pits of different shapes, sizes, shades and regularities. The size and depth of the pits formed on the surface of the bullet warhead should obviously be smaller than the pits on the surface of the golf ball.

The preferred method of arranging the pits is honeycomb, the shape of the pits is circular, and the top end of the bulging portion between the pits is a spherical crown.

A variety of products that produce relative motion with gases and liquids include: motor vehicles, non-motor vehicles, agricultural machinery, construction machinery, non-wheel sports machinery, rail vehicles, surface and underwater vehicles, aircraft, spacecraft, high-speed rotation Mechanical components, conveyor belts; Buildings include: high-rise buildings, buildings built at heights, building attachments for high-rise buildings, underwater structures; pipes include: liquid pipes, gas pipes;

By making the outer surface of cars, trains, and airplanes into a sag of the golf ball surface, the air resistance of cars, trains, and airplanes will drop drastically, increase the transportation speed, or increase the carrying capacity, saving energy from 3⁄4, reducing transportation. cost.

High-rise buildings (such as skyscrapers) are heavily displaced in the windy weather. The fabrication of pits resembling golf ball surfaces in tall buildings or on the surface of buildings built on high places (eg, on the mountain) can reduce the lateral shear of the wind to the building and increase the wind resistance of the building. Spherical buildings or cylindrical high-rise buildings at high heights have an obvious effect of reducing air resistance by this method.

The hull (including the ship's "boat, submarine, torpedo") is subjected to air resistance, the underwater part is subjected to water flow (relative motion), and the surface of the water and underwater parts are respectively made into pits having the same surface as the golf ball. Air resistance and water resistance can be reduced separately.

The inner wall of the pipe is subjected to the frictional force of gas or liquid, and the pit on the inner wall is made like a golf ball surface, which can reduce the gas or liquid transport resistance.

Rotating parts such as flywheels, gears, and shafts of the rotating machine can reduce the air resistance or liquid resistance such as lubricating oil by making the surface shape into a pit like a golf ball surface.

The surfaces of the propeller, the rotor, the propeller, and the fan blades are formed into a pit of a golf ball surface. When they rotate, the fluid resistance decreases and the thrust (lift, tension) increases. The surface of the helmet, goggles (made of glass, resin or plastic material), shoes, gloves, sportswear, and sports protectors can be made into pits to reduce air resistance or water resistance. For example: Speed race athletes (horse riders, cyclists, Formula One (F1) racing drivers) helmets (including goggles), glove steering wheels, protective gear, etc.

The present invention provides a method of reducing gas resistance or liquid resistance, including:

Shape irregular or irregular pits are provided on the surface of the article which is relatively moved with the gas or liquid, and the pits have an average depth of 0.2 - 0.5 Å and an average diameter of 2.5 - 6.0 awake.

In a preferred embodiment of the present invention, the pits are preferably arranged in a honeycomb shape, the pit shape is a circular shape, and the top end of the convex portion between the pits is a spherical crown surface.

Objects that reduce gas (air) or liquid resistance using the method of the present invention include: automobiles, racing cars, rally cars, off-road vehicles, bicycles (body frame seats), bicycles with outer casings, motorcycles, rickshaws, battery cars, carriages, tractors , agricultural machinery, construction machinery, armored vehicles, tanks, trains (especially high-speed trains), subway trains, light rail trains, trams, trolley buses, magnetic levitation vehicles, aircraft (including RC airplanes), helicopters (including RC airplanes), aircraft, Powered airships, power wings (flights), flying saucers, arrows, rockets, launch vehicles, meteorological rockets, fairings > other vehicles, air balloons, missiles, missiles, fairings, bombs, shells, bullets > robots, Military machinery, ships (including RC airplanes), boats, ship diving, boat torpedoes, aircraft or ship's rudder surface, helmets, goggles, sneakers, gloves, sportswear, sports gear, various speed sports helmets (including F1 helmets) , motorcycle helmet, self Car helmets, equestrian helmets, flywheels, gears, shafts, drums, pulleys, belts, conveyor belts, fan blades (including motors, motors, automobiles, air conditioners, etc., internal fans of various electrical and mechanical products), wind turbine blades, Turbine blades, propellers, rotors for rotor propeller wind turbines, fuselage, tower bodies, swimwear, wetsuits, water pipes > oil pipelines, gas pipelines (inner wall manufacturing pits) or pumps, and models of these items.

Buildings include: high towers (especially spherical towers and cylindrical towers), skyscrapers, high-rise buildings and building shackles, buildings built on high places (eg: mountains), chimneys, lightning protection equipment ( Such as: lightning towers, lightning rods, aviation warning lights, piers, underwater buildings, drilling platforms, buoys, buoys, lighthouses; wind tunnels, water holes, vehicles, trains or aircraft (including spacecraft) rearview mirrors, headlights , turn signals, pantographs, air intake grilles, deflectors, rudders, tires, wheels, wheels, door glass. Window glass, bumper, chassis, bottom surface, shaft or top bracket and pendant.

The present invention also provides a material in which all or part of the above-described regular or irregular pits are provided on the surface, the pits having an average depth of 0.20, 5 mm and an average diameter of 2.5 to 6.0 mm. .

When the material is a sheet, a feed (back) has an adhesive coating which can be adhered or coated on the surface of the object to reduce the gas resistance or liquid resistance of the object.

Materials include: metal skin (shell material), skin (cover material) (including soft film material (sheet) with adhesive coating on one side), glass (door and window). Materials include metal materials, polymer materials, glass materials, wood materials, textile materials, leather materials, and inorganic building materials. The beneficial effects of the invention are:

1. Create pits similar to golf ball surfaces on the surface of vehicles such as cars, trains, airplanes, rockets, etc., to reduce their friction with air, thereby reducing their air resistance. Even if the air resistance of transportation vehicles is reduced by 5-10%, it is a huge contribution to saving energy and improving transportation efficiency for the whole society.

2. Create pits similar to the surface of the golf ball on the surface of the fan c or wind turbine blades and other high-speed rotating mechanical parts to reduce air resistance and reduce noise.

3 -, Pit-like pits are made on the inner wall of the pipe to reduce the resistance of gas or liquid.

4. Create pits similar to golf ball surfaces on the outer surface of high-rise buildings such as skyscrapers, towers, chimneys, etc., to reduce the thrust of the wind on the building.

5. A pit similar to a golf ball surface is formed on the outer surface of the underwater part of the ship, the outer surface of the bridge such as a pier, to reduce the resistance of the water or the impact of the water flow on the building. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The technical means for solving the technical problems and achieving the technical effects can be fully understood and implemented according to the description. As long as the conflicts are not formed, the various embodiments in the present invention and the various features in the embodiments may be The technical solutions formed are combined with each other and are within the protection scope of the present invention.

In the manufacture of automobiles, trains, airplanes, rockets, etc., prefabricated pitted metal sheets, high molecular sheets, and glass are used as exterior materials for the product.

Pit is made on the sides of the tires, wheels, and wheels of cars, trains, airplanes, bicycles; pits are placed on the surface of the bicycle hub that uses the hub to replace the spokes; and pits are made outside the door and window of the car > train > aircraft. Taking the front windshield of airplanes, trains, and automobiles as an example, there are KJ pits on the outer surface of the glass, which has less influence on the line of sight, but the wiper may need to be changed into a hairy left. Side glass and skylight glass can also be selected from glass with a concave surface on the outer surface.

As for the size, depth, shape, and regularity of the outer surface pit, there is a direct influence on the reduction of the air resistance. The choice depends on the volume and shape of the moving object, and is related to the relative velocity of the air or water flow. Optimized design data can be obtained by wind tunnel testing or water tunnel testing.

As for how to make a 3⁄43 pit like a golf ball surface on the surface of the material, there are many specific methods, and the prior art can be realized. For example, a sheet of metal may be formed by stamping such that its surface has a pit similar to a golf ball surface. This stamped sheet of metal is then used as a skin for vehicles > trains, airplanes, rockets, etc.

The towers and blades of the wind turbine can make pits similar to the surface of the golf ball on the surface, especially the surface of the head of the blade (close to the shaft position) and the surface of the radial windward side of the shaft are formed into a pit shape. Reduce the thrust of the wind on the tower body, reduce the requirements on the strength of the tower body and the foundation of the tower body; or increase the power generation capacity by increasing the force area of the fan blades. In the surface of metal materials, polymer materials, glass materials, wood materials, textile materials, especially on the surface of sheets of these materials, pits similar to golf ball surfaces are produced, and these materials can be used to realize the technical features of the present invention. Basic materials.

One side of the sheet of the polymer material is made into a pit similar to the surface of the golf ball (using a method of stamping, rolling or molding, the prior art), and the other side is coated with an adhesive material so that the sheet has a sticking function. Such sheets can be applied to the surface of a variety of products (e.g., automobiles, high-speed rails, airplanes) such that the surface of the product has pits similar to the surface of the golf ball. Metal (flake) sheets or other materials (e.g., leather materials) may also be coated with an adhesive to make it a basic material for rapid implementation of the present method.

Claims

Claim

1. A method of reducing gas resistance or liquid resistance, comprising:

A regular or irregular EJ pit is provided on the surface of the object that moves relative to the gas or liquid, the pit having an average depth of 0.20, 5 mm and an average diameter of 2.5-6.0 mm.

2. The method according to the claim, wherein the pits are arranged in a honeycomb shape, the pit shape is a circle, and a tip end of the convex portion between the pits is a spherical crown surface.

3. The method according to claim or claim 2, wherein the object comprises: a car, a racing car, a rally car, an off-road vehicle, a bicycle, a bicycle with a casing, a motorcycle, a rickshaw, a battery car, a carriage, a tractor, Agricultural machinery, construction machinery, armored vehicles, tanks, trains, subway trains, light rail trains, trolley buses, magnetic levitation vehicles, aircraft, helicopter aircraft, powered airships, flying saucers, arrows, rockets, launch vehicles, meteorological rockets, Fairing, other vehicle air balloon, missile missile, fairing, bomb, projectile, bullet, robot, military machinery, ship, boat, ship, submarine, torpedo, aircraft or ship's rudder, helmet, guard Eyepieces, sneakers, gloves, sportswear, sports aids, speed sports helmets, flywheels, gears, shafts > drums > pulleys, belts, conveyor belts, fan blades, wind turbine blades, turbine blades, propellers, rotors, spirals Propeller, wind The head, fuselage, tower body, swimsuit, wetsuit, water pipe, oil pipeline, gas pipeline or pump of the motor unit, and models of these items;

High towers, skyscrapers, high-rise buildings and buildings squatting, building high-rise buildings, chimneys, lightning protection equipment, aviation warning lights, piers, underwater buildings, rigs, buoys, buoys, lighthouses, wind tunnels, water Hole, rear view mirror, headlight, turn signal, pantograph, air intake grille, deflector, rudder, tire, wheel, hub, door glass, glazing, bumper, chassis, bottom surface, shaft or top bracket And plug-ins.

4. A material in which all or part of the surface is provided with the regular or irregular pits according to claim 1 or 2, the pits having an average depth of 0.2 to 0.5 mm and an average diameter of 2, 5- 6,0m:m.

5. The material according to claim 4, wherein the material is a sheet material and has an adhesive coating on one side thereof, which can be adhered or coated on the surface of the object to reduce the gas resistance of the object or Liquid resistance.