Gas Dynamics Simulation for the Design of Intake and Exhaust Systems - Latest Techniques

1995 ◽  
Author(s):  
C. S. Wren ◽  
O. Johnson
Keyword(s):  
Gas Dynamics ◽  
Dynamics Simulation ◽  
Gas Dynamics Simulation ◽  
Exhaust Systems

scholarly journals On 2D gas dynamics simulation using RKDG method on structured rectangular meshes

2018 ◽  
Vol 30 (2) ◽  
pp. 285-300 ◽  
Author(s):  
V.N. Korchagova ◽  
I.N. Fufaev ◽  
S.M. Sautkina ◽  
V.V. Lukin
Keyword(s):  
Gas Dynamics ◽  
Dynamics Simulation ◽  
Gas Dynamics Simulation

First experience of compressible gas dynamics simulation on the Los Alamos roadrunner machine

2009 ◽  
Vol 21 (17) ◽  
pp. 2160-2175 ◽  
Author(s):  
Paul R. Woodward ◽  
Jagan Jayaraj ◽  
Pei-Hung Lin ◽  
William Dai
Keyword(s):  
Gas Dynamics ◽  
Dynamics Simulation ◽  
Los Alamos ◽  
Gas Dynamics Simulation ◽  
Compressible Gas

scholarly journals RKDG method for 2D gas dynamics simulation on uniform rectangular meshes

2019 ◽  
Vol 1348 ◽  
pp. 012098
Author(s):  
Victoria Korchagova ◽  
Ivan Fufaev ◽  
Vladimir Lukin ◽  
Ilia Marchevsky ◽  
Sofya Sautkina
Keyword(s):  
Gas Dynamics ◽  
Dynamics Simulation ◽  
Gas Dynamics Simulation

Redesign of Exhaust Systems for Naval Gas Turbines: Usage of a New Cr-Mn Austenitic Stainless Steel

2010 ◽  
Vol 636-637 ◽  
pp. 497-503 ◽  
Author(s):  
H.J.T. Cruz ◽  
Rui F. Martins ◽  
J.C.G. Veigas ◽  
J.L.G. Aveiro
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Fatigue Resistance ◽  
Welded Joints ◽  
Gas Turbines ◽  
Exhaust System ◽  
Dynamics Simulation ◽  
Aisi 316L ◽  
New Material ◽  
Exhaust Systems

Studies performed earlier show that the thermal shock loading has influence, together with the normal service loadings, in the fatigue life of some critical welded joints present in the exhaust systems of naval gas turbines [1-2]. In order to prevent the fatigue crack propagation that was verified in service [3], a recently developed ultrahigh-strength austenitic stainless steel was selected (Cr-Mn steel - number 1.4376) and its mechanical properties and the fatigue resistance are under study. This new material could replace, locally, the current material used in the main structure of the exhaust system (AISI 316L). Experimental data are shown. The temperature measured at the critical locations was about 350°C and the pressure applied in the system was calculated through a Computational Fluid Dynamics simulation (CFD), whose results are presented in the paper. The stresses induced by the loadings will be important to estimate the lifetime from the fatigue resistance tests (S-N curves) that will be performed, at 350°C, in butt and T-welded joints of AISI 316L stainless steel with Cr-Mn austenitic stainless steel.

Supernovae and interstellar gas dynamics

1967 ◽  
Vol 31 ◽  
pp. 117-119
Author(s):  
F. D. Kahn ◽  
L. Woltjer
Keyword(s):  
Lower Limit ◽  
High Velocity ◽  
Gas Dynamics ◽  
Interstellar Cloud ◽  
Interstellar Gas ◽  
Random Motions ◽  
Relativistic Particles

The efficiency of the transfer of energy from supernovae into interstellar cloud motions is investigated. A lower limit of about 0·002 is obtained, but values near 0·01 are more likely. Taking all uncertainties in the theory and observations into account, the energy per supernova, in the form of relativistic particles or high-velocity matter, needed to maintain the random motions in the interstellar gas is estimated as 1051·4±1ergs.

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