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A diffuser is an aerodynamic device primarily used on automobiles. Image File history File links Merge-arrows. ...
Ground effect is an aerodynamic effect used in car design, which has been exploited to create downforce, particularly in racing cars. ...
Bottom: Bottom-view. Top: Side-cut-view, the red circles mark the front and rear diffuser respectively
Rear
A diffuser, in an automotive context, is usually a shaped section of the car underbody which improves the car's automotive aerodynamics properties by enhancing the transition between the high-velocity airflow underneath the car and the much slower freestream airflow of the ambient atmosphere. It works by providing a space for the underbody airflow to decelerate and expand so that the boundary between the car's airflow and "external" airflow is less turbulent, and it also provides a degree of "wake infill" (the wake being a turbulent area of low pressure that is caused by the passage of the vehicle through the air; this can cause pressure drag). This article or section does not cite its references or sources. ...
Automotive aerodynamics is the study of the aerodynamics of road vehicles. ...
Air redirects here. ...
In fluid dynamics, turbulence or turbulent flow is a flow regime characterized by chaotic, stochastic property changes. ...
A wake is the region of turbulence immediately to the rear of a solid body caused by the flow of air or water around the body. ...
Parasitic drag (also called parasite drag) is drag caused by moving a solid object through a fluid. ...
As the air enters towards the front of the car it accelerates and reduces pressure. There is a second suction peak at the transition of the flat bottom and diffuser. The diffuser then eases this "high velocity" air back to normal velocity and also helps fill in the area behind the car making the whole underbody a more efficient downforce producing device by reducing drag on the car and increasing downforce. Acceleration is the time rate of change of velocity and/or direction, and at any point on a velocity-time graph, it is given by the slope of the tangent to the curve at that point. ...
This article is about pressure in the physical sciences. ...
Three different styles of front wings from three different Formula 1 eras, all designed to produce downforce on the front wheels. ...
An object moving through a gas or liquid experiences a force in direction opposite to its motion. ...
The aft part of a car underbody can be a diffuser. It tries to connect the underbody to the back without producing turbulences so that Bernoulli's principle applies and the pressure increases while the velocity decreases. The side and the roof end in a sharp edge, so that their pressure does not increase. Because the pressure in the back tends to equilibrate, the pressure below the car is lower than on the side and the roof of the car. Diffuser can refer to any device that diffuses in some manner such as: Diffuser (automotive), a shaped section of a cars underbody which improves the cars aerodynamic properties Diffuser (breathing set part), a device fitted over an underwater breathing sets blowoff hole to break up the resulting...
In fluid dynamics, turbulence or turbulent flow is a flow regime characterized by chaotic, stochastic property changes. ...
Bernoullis Principle states that for an ideal fluid (low speed air is a good approximation), with no work being performed on the fluid, an increase in velocity occurs simultaneously with decrease in pressure or a change in the fluids gravitational potential energy. ...
Rear diffuser, showing that the area covered by the exhaust even for a supercar is small compared to the area of the diffuser seen from behind. It needs improvement to work: [1]. Image File history File linksMetadata Download high-resolution version (1030x833, 146 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Lamborghini Murciélago Metadata This file contains additional information, probably added from the digital camera or scanner used...
For other uses, see Supercar (disambiguation). ...
| Muffler as Rear diffuser Image File history File links Download high resolution version (1483x844, 170 KB) 2004 Porsche Cayenne S Source: Photo by User:Sfoskett File links The following pages link to this file: Porsche Cayenne ...
| The muffler and exhausts make way for the diffuser | Rear diffuser with two massive fins | Rear diffuser with fins with too weak roots Image File history File linksMetadata Download high resolution version (2842x1494, 910 KB) Summary 2003 Enzo Ferrari Photographed by Jagvar at the Greenwich Concours dElegance in Greenwich, CT on June 4, 2006. ...
| Clean diffuser Image File history File linksMetadata Size of this preview: 800 × 600 pixel Image in higher resolution (1600 × 1200 pixel, file size: 274 KB, MIME type: image/jpeg) Ferrari F40 - rear view Photo taken by Luke van Grieken on 3 March 2007 using a Canon IXUS 750 camera. ...
| | Ferrari F430 with fins and exhaust giving way to the diffuser Image File history File links Metadata Size of this preview: 800 × 585 pixelsFull resolution (1024 × 749 pixel, file size: 496 KB, MIME type: image/jpeg) Bağdat Avenue on the Anatolian side of Istanbul is famous for its rows of shops, cafés, pubs and restaurants File history Legend: (cur...
Ferrari F430 Spider The Ferrari F430 is a high-performance sports car produced by the Italian automaker Ferrari to succeed the Ferrari 360. ...
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Front Note that the front of the car slows down the air without a diffuser making this the ideal place for an inlet. A splitter separates the flow into the upper path, which will increase pressure in the diffuser and the lower path which stays as low pressure or even reduce pressure as the combination of an up looking splitter and the street acts as a Venturi nozzle. The height of the splitter is as low as possible without hitting small bumps, for street legal cars there is a minimum of about 100 mm. But a diffuser reduces the pressure in front of the car and thereby the amount of air pressed below the car. Sometimes a diffuser is used to let the wheel-casing also pump down the pressure below the car. Many small engine-exhausts in the back also help pumping. The exhaust from the engine compartment in the underbody can blows the air outwards by means of convergent nozzles, which reduce the pressure from the high pressure in the compartment to the low pressure below the car (the nozzle is the inverse of the diffuser). The single radiator behind the grill inherits its square shape from the square frontal area and the circular fan. Wing below splitter for no apparent reason | Air which entered the diffuser exits on top Image File history File linksMetadata Size of this preview: 800 × 533 pixel Image in higher resolution (3456 × 2304 pixel, file size: 4. ...
| Sharp splitter below diffuser Image File history File links 1998-GT.jpg Licensing I, the creator of this work, hereby release it into the public domain. ...
| Air which entered the diffuser exits on the sides. The triangular front and wing below the splitter would only make sense for a real formula 1 car Formula One, abbreviated to F1 and also known as Grand Prix racing, is the highest class of single-seat open-wheel auto racing. ...
| Wings below splitter in front of wheels for no apparent reason Image File history File links No higher resolution available. ...
| Wing below splitter for no apparent reason Image File history File links Size of this preview: 640 × 480 pixelsFull resolution (640 × 480 pixel, file size: 44 KB, MIME type: image/jpeg) (All user names refer to en. ...
| Wing in front of diffuser, may prevent flow separation. Discrete diffuser for breathing air Image File history File links Download high resolution version (1280x1023, 221 KB) Just waiting in line File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ...
| Sharp splitter and two diffusers for two radiators in front of the wheels Image File history File links Download high resolution version (2592x1944, 2115 KB) Please see the file description page for further information. ...
| Two diffusers for two radiators in front of the wheels Image File history File linksMetadata Download high resolution version (1280x960, 325 KB) Source: English Wikipedia: Uploaded: 00:01, 8 January 2006 . ...
| Discrete brake cooling channels, show how small these inlets only need to be. Image File history File links Download high resolution version (1600x1200, 212 KB) Summary Author: Nicholas Meredith Licensing I, the creator of this work, hereby release it into the public domain. ...
| Front of Renault Twingo has only an opening for the radiator Image File history File links Twingo. ...
The Renault Twingo is a city car built by French automaker Renault, officially presented at the 1992 Mondial de lAutomobile and going on sale in early 1993. ...
| Front of Volkswagen Passat has only an opening for the radiator and a discrete breathing intake in the VW sign not really helping to suck air away from the ground, but shows how small such an inlet only needs to be. Image File history File linksMetadata Download high resolution version (1024x768, 428 KB) Beschreibung Beschreibung: VW Passat Quelle: selbst fotografiert Fotograf: Sven Storbeck Licensing File links The following pages link to this file: Volkswagen Passat Metadata This file contains additional information, probably added from the digital camera or scanner used to...
The Volkswagen Passat is a family car built by Volkswagen AG (VW), produced in various forms since 1973. ...
| MINI (BMW) with discrete diffuser for the intercooler not really helping to suck air away from below the car Image File history File links Download high-resolution version (1152x782, 429 KB) 2006 MINI Cooper S Checkmate I, the creator of this work, hereby release it into the public domain. ...
MINI is the name of a Cowley, England-based subsidiary of BMW as well as that of a car produced by that subsidiary since April 2001. ...
An intercooler, or charge air cooler, is an air-to-air or air-to-liquid heat exchange device used on turbocharged and supercharged internal combustion engines to improve their volumetric efficiency by increasing intake air charge density through isochoric cooling. ...
| Sharp splitter front diffuser and discrete diffuser for breathing on top of cabin Image File history File linksMetadata Size of this preview: 800 × 600 pixelsFull resolution (2592 × 1944 pixel, file size: 1. ...
| Sharp splitter. The light shining through the grill shows the large volume inside the diffuser. | Low lying diffuser, with wing in front of diffuser Image File history File linksMetadata Download high-resolution version (2751x1500, 315 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Volkswagen New Beetle Metadata This file contains additional information, probably added from the digital camera or scanner used...
| Low lying diffuser, showing that even a small block only needs a small inlet into the diffuser. Image File history File linksMetadata Size of this preview: 800 × 390 pixelsFull resolution (1992 × 972 pixel, file size: 128 KB, MIME type: image/jpeg) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ...
| The large inlet in the middle spreads to the side under the car and the floor goes down for Venturi, more than allowed in a racing car The Ferrari Enzo supercar. ...
| Sporting the same concepts as the Enzo in a weaker fashion. | Shows how small such an inlet only needs to be. No separate openings for horn, engine ,or inter-cooler. Image File history File links Opel Calibra sul Circuito di Monza File links The following pages link to this file: General Motors Calibra ...
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See also A Venturi meter is shown in a diagram, the pressure in 1 conditions is higher than 2, and the relationship between the fluid speed in 2 and 1 respectively, is the same as for pressure. ...
Auto racing (also known as automobile racing or autosport) is a sport involving racing automobiles. ...
Ground effect is an aerodynamic effect used in car design, which has been exploited to create downforce, particularly in racing cars. ...
A cold air intake is a system used to bring down the temperature of the air going into a car for the purpose of increasing the power of the internal-combustion engine. ...
This article needs to be cleaned up to conform to a higher standard of quality. ...
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