HEAT TRANSFER TO A PARTICLE EXPOSED TO A RAREFIED IONIZED-GAS FLOW

1986 ◽  
Author(s):  
Xi Chen ◽  
Ping He
Keyword(s):  
Heat Transfer ◽  
Gas Flow ◽  
Ionized Gas

Partially Ionized Gas Flow and Heat Transfer in the Separation, Reattachment, and Redevelopment Regions Downstream of an Abrupt Circular Channel Expansion

1972 ◽  
Vol 94 (1) ◽  
pp. 119-127 ◽  
Author(s):  
L. H. Back ◽  
P. F. Massier ◽  
E. J. Roschke
Keyword(s):  
Heat Transfer ◽  
Gas Flow ◽  
Reverse Flow ◽  
Vortex Sheet ◽  
Good Prediction ◽  
Ionized Gas ◽  
Energy Fraction ◽  
High Enthalpy ◽  
Channel Expansion ◽  
Partially Ionized

Heat transfer and pressure measurements obtained in the separation, reattachment, and redevelopment regions along a tube and nozzle located downstream of an abrupt channel expansion are presented for a very high enthalpy flow of argon. The ionization energy fraction extended up to 0.6 at the tube inlet just downstream of the arc heater. Reattachment resulted from the growth of an instability in the vortex sheet-like shear layer between the central jet that discharged into the tube and the reverse flow along the wall at the lower Reynolds numbers, as indicated by water flow visualization studies which were found to dynamically model the high-temperature gas flow. A reasonably good prediction of the heat transfer in the reattachment region where the highest heat transfer occurred and in the redevelopment region downstream can be made by using existing laminar boundary layer theory for a partially ionized gas. In the experiments as much as 90 percent of the inlet energy was lost by heat transfer to the tube and the nozzle wall.

HEAT TRANSFER CHARACTERISTICS OF A GAS FLOW IN UNI-DIRECTIONAL POROUS COPPER PIPES

2018 ◽  
Author(s):  
Y. Sato ◽  
K. Yuki ◽  
Y. Abe ◽  
Risako Kibushi ◽  
Noriyuki Unno ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Gas Flow ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics ◽  
Porous Copper

RADIATION-CONVECTIVE HEAT TRANSFER BETWEEN GAS FLOW AND BLUNT BODIES OF POROUS INJECTION OF RADIATION ABSORBING SUBSTANCES

1970 ◽  
Author(s):  
V. P. Motulevich ◽  
M.S. Bespalov ◽  
A.N. Boyko ◽  
V. M. Eroshenko ◽  
E. D. Sergievskii ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Convective Heat Transfer ◽  
Convective Heat ◽  
Gas Flow ◽  
Blunt Bodies ◽  
Porous Injection

SHOCK WAVE INTERACTION NEAR A CYLINDER ALIGNED NORMAL TO A BLUNTED PLATE—PART I: GAS FLOW AND HEAT TRANSFER ON A PLATE NEAR A CYLINDER

2018 ◽  
Vol 49 (2) ◽  
pp. 105-118
Author(s):  
Volf Ya. Borovoy ◽  
Vladimir Evguenyevich Mosharov ◽  
Vladimir Nikolaevich Radchenko ◽  
Arkadii Sergeyevich Skuratov
Keyword(s):  
Heat Transfer ◽  
Shock Wave ◽  
Gas Flow ◽  
Wave Interaction ◽  
Shock Wave Interaction ◽  
Flow And Heat Transfer

Analysis of a Virtual Prototype First-Stage Rotor Blade Using Integrated Computer-Based Design Tools

2006 ◽  
Author(s):  
Michel Arnal ◽  
Christian Precht ◽  
Thomas Sprunk ◽  
Tobias Danninger ◽  
John Stokes
Keyword(s):  
Heat Transfer ◽  
Gas Flow ◽  
Thermal Loading ◽  
Cfd Simulation ◽  
Three Dimensional ◽  
Life Assessment ◽  
Element Analysis ◽  
Pressure Losses ◽  
Cooling Channels ◽  
Internally Cooled

The present paper outlines a practical methodology for improved virtual prototyping, using as an example, the recently re-engineered, internally-cooled 1st stage blade of a 40 MW industrial gas turbine. Using the full 3-D CAD model of the blade, a CFD simulation that includes the hot gas flow around the blade, conjugate heat transfer from the fluid to the solid at the blade surface, heat conduction through the solid, and the coolant flow in the plenum is performed. The pressure losses through and heat transfer to the cooling channels inside the airfoil are captured with a 1-D code and the 1-D results are linked to the three-dimensional CFD analysis. The resultant three-dimensional temperature distribution through the blade provides the required thermal loading for the subsequent structural finite element analysis. The results of this analysis include the thermo-mechanical stress distribution, which is the basis for blade life assessment.

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