Results 1 - 10 of 116

Pressure Gradient Effects on Hypersonic Cavity Flow Heating

by Ramadas K. Prabhu
"... The effect of a pressure gradient on the local heating disturbance of rectangular cavities tested at hypersonic freestream conditions has been globally assessed using the two-color phosphor thermography method. These experiments were conducted in the Langley 31-Inch Mach 10 Tunnel and were initiated ..."
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that the presence of the pressure gradient did not alter the open cavity heating for laminar-entry/laminar-exit flows, but did raise the average floor heating for closed cavities. The results of these risk-reduction studies will be used to formulate a heating assessment of potential damage scenarios occurring

Influence of the nozzle-exit boundary-layer thickness on the flow and acoustic fields of initially laminar jets

by Christophe Bogey, Christophe Bailly - 15th AIAA/CEAS Aeroacoustics Conference, AIAA Paper
"... Round jets originating from a pipe nozzle are computed by Large-Eddy Simulations (LES) to investigate the effects of the nozzle-exit conditions on the flow and sound fields of initially laminar jets. The jets are at Mach number 0.9 and Reynolds number 105, and exhibit exit boundary layers characteri ..."
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Round jets originating from a pipe nozzle are computed by Large-Eddy Simulations (LES) to investigate the effects of the nozzle-exit conditions on the flow and sound fields of initially laminar jets. The jets are at Mach number 0.9 and Reynolds number 105, and exhibit exit boundary layers

Strategies for Effectively Visualizing 3D Flow with Volume LIC

by Victoria Interrante, Chester Grosch , 1997
"... This paper discusses strategies for effectively portraying 3D flow using volume line integral convolution. Issues include defining an appropriate input texture, clarifying the distinct identities and relative depths of the advected texture elements, and selectively highlighting regions of interest i ..."
Abstract - Cited by 90 (0 self) - Add to MetaCart
;halos" that can help to intuitively indicate the presence of depth discontinuities between contiguous elements in a projection and thereby clarify the 3D spatial organization of elements in the flow. The proposed techniques are applied to the visualization of a hot, supersonic, laminar jet exiting into a colder

The Effect of Inlet and Exit Losses on Free Convective Laminar Flow in the Trombe Wall Channel

by J A Tichy
"... ..."
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Abstract not found

BRIEF NOTES Hydrodynamic Entry Length for Laminar Flow Between Parallel Porous Plates

by J R Doughty , JR H C Perkins
"... with the value obtained from the slope in where a is a function of ionic diffusion coefficient, C 0 is the capacitance of the diffused layer at the point of zero charge, z is the valance, k is Boltzman's constant, e 0 is the electron charge, and T is the absolute temperature. This correction ..."
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con- Hydrodynamic Entry Length for Laminar

Flow Visualization ofRelaminarization Phenomena in Curved Pipes and the Related Measurements

by unknown authors
"... Abstract: Flow visualization results for secondary flow phenomena at the exit of 90 " and 180 " bends and helically coiled pipes (1, 2 and 5 turns), (radius of curvature K = 381 mm, inside pipe diameter d=37.5 mm, curvature ratio dl2K = 0.049) and in the downstream straight pipe ( lid = 30 ..."
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= 30) are presented to study the stabilizing (relaminarization) effect in curved pipes with fully developed entry turbulent air flow and the destabilizing (re-transition from laminar to turbulent flow) effect in the downstream straight region. The entry Reynolds numbers are Re = 2200, 3200

Flow in Thin-Walled Collapsible Tubes

by M. Thiriet, S. Naili, A. Langlet, C. Ribreau , 1997
"... uid density oe : conductivity : shear stress Other variables g : gravity t : time Z : ascending vertical axis fx; y; zg : cartesian coordinates with unit vector set fi,j,kg Sub- and superscripts \Delta : normalized \Delta : time mean \Delta : critical \Delta 0 : unstressed \Delta b : b ..."
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: buckling \Delta p : for first parallel (wall edges) \Delta c : point-contact at p = p c \Delta ` : line-contact at p = p ` \Delta L : laminar \Delta T : turbulent \Delta 1 : tube entry \Delta 2 : tube exit \Delta d : downstream tube segment \Delta u : upstream (head tank) \Delta e : external \Delta i

Flow In Thin-Walled Collapsible Tubes

by Thiriet Naili Langlet, Thiriet M, Naili S, Langlet A, Ribreau C
"... conductivity : shear stress Other variables g : gravity t : time Z : ascending vertical axis fx; y; zg : cartesian coordinates with unit vector set fi,j,kg Sub- and superscripts \Delta : normalized \Delta : time mean \Delta : critical \Delta 0 : unstressed \Delta b : buckling \Delta p : fo ..."
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: for first parallel (wall edges) \Delta c : point-contact at p = p c \Delta ` : line-contact at p = p ` \Delta L : laminar \Delta T : turbulent \Delta 1 : tube entry \Delta 2 : tube exit \Delta d : downstream tube segment \Delta u : upstream (head tank) \Delta e : external \Delta i : internal, luminal

Numerical Prediction of Flow and Combustion Characteristics of a Model Annular Combustor

by S K Chow , Professor of Aerodynamics U K J J Mcguirk
"... ABSTRACT Two instantaneous chemistry descriptions (full chemical equilibrium and laminar flamelet) were applid to the prediction of gaseous reaction in a small-scale combustor. The chemical state relationships were combined with a single conserved scalar/13-function pdf/k-e turbulence model closure ..."
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ABSTRACT Two instantaneous chemistry descriptions (full chemical equilibrium and laminar flamelet) were applid to the prediction of gaseous reaction in a small-scale combustor. The chemical state relationships were combined with a single conserved scalar/13-function pdf/k-e turbulence model

INFLUENCE OF DISSIPATIVE ENTRY TEMPERATURE ON LAMINAR HEAT TRANSFER IN THERMALLY DEVELOPING REGION OF A CIRCULAR PIPE WITH VISCOUS DISSIPATION

by M. M. J. Kumar, Satyamurty V. V , 2011
"... Steady laminar forced convection heat transfer in the thermal entrance region of a circular pipe including viscous dissipation has been studied assuming the flow to be hydrodynamically fully developed and thermally developing. The circular pipe is subjected to constant wall temperature. Two entry te ..."
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Steady laminar forced convection heat transfer in the thermal entrance region of a circular pipe including viscous dissipation has been studied assuming the flow to be hydrodynamically fully developed and thermally developing. The circular pipe is subjected to constant wall temperature. Two entry
Results 1 - 10 of 116