[PDF] Top 20 Numerical study of flow over vortex generators

... VII. G EOMETRY OF V ORTEX G ENERATOR In connection with the size, the thickness of the boundary layer is measured based on the assumption that the optimum height of the VG would be almost equal to the boundary layer ... See full document

... their numerical study, quanti- tatively examined the heat transfer and friction factor changes due to different parameters such as obstacle se- quence and obstacle geometries by passing the fluid through ... See full document

... winglet vortex generators were studied for Re = 350 – ...of flow attack angle and winglet high perform enlarge pressure ...on flow and heat transfer behaviors a micro-channel heat exchanger ... See full document

... channel flow as the base flow with rectangular winglet pair as the vortex ...The vortex generators can make the flow unsteady and induce early transition to ...turbulence. ... See full document

... wing vortex generators in a square duct on the thermal and flow characteristics execution has been numerically explored in this ...The vortex generator allows the air flow to distribute ... See full document

... of flow around a radiator’s components to determine the relative effect of vortex generators around the ...fluid flow around the vortex ... See full document

... or vortex generators. Many types of the vortex generator; winglet, wing, baffle, rib, groove, ...the vortex generators leads to increase in vortex strength or turbulence ... See full document

... and flow structure with longitudinal VGs in fin and tube heat exchanger has taken more ...the flow and heat transfer of an air stream over rectangular winglet pair (RWP) with three configurations; 1, ... See full document

... 90 Measurements of the exit velocity profile for each temporal pattern of nozzle diameter variation indicate that those cases with larger average nozzle contraction ratio during initiation of the starting jet (i.e., ... See full document

... Especially close to the vortex generators, the solution is very time consuming. In the next step, using semi-empirical models (case three) such as introducing a source term into momentum equation was tried ... See full document

... Periodic heat flows have broad industrial and engineering applications in steam genera- tion in a boiler, condenser or air cooling in the coil of an air conditioner. Forced con- vection was broadly employed in different ... See full document

... This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium,[r] ... See full document

... [r] ... See full document

... Outside i DuctInlet Flow Direction Dx/D Z -1.0 Locationof VGs mew AA D Ins X/ -A A Engine Face Figure 1.6: S-bend intake duct with detail view AA of the spacing angle avc the , B1 local [r] ... See full document

... Various vortex generators; rib, baffle, winglet, ...The vortex generators can help to increase heat transfer rates and the thermal performance lead to a compact heat exchanger and save more ... See full document

... wing vortex generators in a flat-pl ate chan nel ...secondary flow are the more significant fluid dyn amic factors affecting heat transfer, followed impor tance by fluid velocity, and then turbu lent ... See full document

... current study. The results are presented in terms of flow configuration, heat transfer behavior and thermal performance assessments and also compared with the smooth tube with no ...As numerical ... See full document

... flows over the wing of an aircraft, the air sticks to the surface of the ...air flow loses its adherence and separates from the wing, aircraft performance can suffer in the form of increased drag, loss of ... See full document

... the flow on the roof is to employ vortex generators (VGs) to keep the boundary layer ...Combining vortex generators with suction and blowing at the rear of the car may reduce the size ... See full document

... The flow analysis over a car is studied for various vortex generators and results are discussed. From the results the rectangular profile has minimum drag compare than other profile ... See full document