Vortex generators
An experimental investigation of the use of air jet vortex generators to control shock induced boundary layer separation
... NOTATION Chord of half aerofoil C CL max Cpb Maximum lift coefficient Boundary Layer Pressure Coefficient PobPoe-P d Diameter of round jet exit D Pitch of vortex generators h Height of v[r] ...
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Heat Transfer Enhancement by Vortex Generators for Compact Heat Exchanger of Automobiles
... of generators is 18. These groups of vortex genera- tors were investigated, setting in the center of the gas ...of vortex generators with ψ = 135˚ generate strong longitudinal vortices which ...
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NUMERICAL SIMULATION OF TURBULENT FLOW IN A RECTANGULAR CHANNEL WITH PERIODICALLY MOUNTED LONGITUDINAL VORTEX GENERATORS
... The present work considers channel flow as the base flow with rectangular winglet pair as the vortex generators. This configuration has application in plate-fin heat exchangers and in many internal cooling ...
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INFLUENCES OF THE PUNCHED DELTA WINGLET VORTEX GENERATORS IN A CIRCULAR TUBE HEAT EXCHANGER ON THERMO-HYDRAULIC PERFORMANCE
... winglets vortex generators with different ...winglet vortex generators can help augment heat transfer rate, but also increase in the pressure ...winglet vortex generators by ...
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Benefits of spanwise gaps in cylindrical vortex generators for conjugate heat transfer enhancement in micro-channels
... Cylindrical vortex generators placed transversely over the span of a micro-channel can enhance heat transfer performance, but adding full-span vortex generators incurs a substantial pressure ...
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NUMERICAL INVESTIGATIONS ON HEAT TRANSFER AND FLOW STRUCTURE IN A CIRCULAR TUBE WITH VARIOUS SHAPES OF WINGLET VORTEX GENERATORS
... winglet vortex generators, the blue contour (cold air) is found at the center of the tube, while the red contour (hot air) is found near the wall ...winglet vortex generators due to better ...
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Flow and heat transfer enhancement around staggered tubes using rectangular vortex generators
... The forgoing literature reviews show that have not done comparison study of flow and heat transfer around tubes for different location vortex generators for tube banks in staggered arrangement. This has ...
5
A CFD Analysis of Rectangular Winglet Vortex Generators in Heat Exchanger
... the vortex generators is also ...winglet generators was shown to improve the heat transfer process in heat exchangers ...shaped vortex generators and rectangular winglet at Reynolds ...
5
Review of Analysis of Flow around a heat radiators to determine suitable shape of vortex generators
... type vortex generators provides with greatest mixing and hence this profile provides maximum momentum transfer, by decreasing local viscosity temporarily, thus promoting the greater transfer by permitting ...
8
Heat transfer enhancement in a micro-channel cooling system using cylindrical vortex generators.
... because this corresponds to the upper temperature limit for operation of electronic devices [17, 32-34]. Before discussing in detail the effects of the vortex generators, Fig. 6 shows a typical plot of ...
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Parametric investigation of boundary layer control using triangular micro vortex generators
... Abstract. Improving the aerodynamic performance of an airfoil is one of the primary interests of the Aerodynamicists. Such performance improvement can be achieved using passive or active flow control devices. One of such ...
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Numerical Study on Improvement of Hydrofoil Performance using Vortex Generators (RESEARCH NOTE)
... passive vortex generators (VGs) which are usually placed on the near wall ...the vortex generators is to particularly increase the flow momentum inside the boundary layer ...
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Experimental Investigation of Pressure Drop Characteristics in A Square Channel Using Detached Ribs as Vortex Generators
... of vortex generators in a square ...as vortex generators are inserted 90˚ in a square duct having different aspect ratio (AR) of 2, 3, ...inserting vortex generator, flow direction and ...
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Energization of Boundary Layer Over Wing Surface By Vortex Generators
... without vortex generators of two different shapes located at leading and trailing edges of a linear ...the vortex generators are studied in four different ...shaped vortex ...
7
Thermal-Hydraulic Performance Enhancement by Combination Concepts of Longitudinal Vortex Generators, V-Shaped Concavities and Protrusions.
... longitudinal vortex generators (LVGs) are capable of enhancing the heat transfer at the cost of moderate to high pressure drops depending on their ...
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Effect of Winglet Vortex Generators Orientation on Heat Transfer Enhancement
... of vortex generators as compared with plane ...each vortex generator, it is decreased as Reynolds number increase ...winglet vortex generators greats more disturbance of the boundary ...
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Numerical Study on Thermal and Flow Characteristics of Air in a Square Duct using Delta Wing Vortex Generators
... Only passive techniques are considered here for discussion. The passive method for heat transfer enhancement relies on upon two essential strategies: aggravating the thermal boundary layer and utilizing mass liquid ...
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Numerical study of flow over vortex generators
... by Vortex generators which are placed near rear windshield on roof ...of vortex generators, flow separation is reduced in automobile, effectively reducing pressure drag and hence improving ...
7
Theoretical prediction and design for vortex generators in turbulent boundary layers
... A theoretical study is presented of three-dimensional turbulent flow provoked in a boundary layer by an array of low-profile vortex generators (VGs) on the surface.. The typ[r] ...
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Dynamics and Scaling of Self-Excited Passive Vortex Generators for Underwater Propulsion
... using vortex rings for propulsion can be found by adopting a biomimicry approach, where researchers directly mimic the body forms and mechanisms from ...a vortex-ring enhanced vehicle to include propulsion ...
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