TY - GEN
T1 - Spatial transition point from laminar flow to turbulence in a pipe with injection revealed by solving a weakly-stochastic navier-stokes equation
AU - Naruse, Koki
AU - Naitoh, Ken
N1 - Funding Information:
We would like to thank Osaka University for lending supercomputer for the above computations in this research. Moreover, we thank Mr. Akihito Yamasaki who was a master student at Waseda University, Mr. Kohta Tsuru and Ms. Remi Konagaya of Waseda University for giving some advice on English in this paper.
Publisher Copyright:
© 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2018
Y1 - 2018
N2 - In order to simulate the spatial transition point from laminar flow to turbulence in a closed pipe, we proposed the numerical method called “stochastic determinism” that based on the stochastic Navier-Stokes equation. The important point is that the stochasticity level is decided by inlet disturbance intensity. The finite difference method based on the multi-level formulation is also included which can calculate spatial derivatives of physical quantities and integrated quantities accurately. In this report, we compute the transition phenomenon for incompressible flow with injection on the pipe wall. The computations fairly agree with Hof’s experimental results.
AB - In order to simulate the spatial transition point from laminar flow to turbulence in a closed pipe, we proposed the numerical method called “stochastic determinism” that based on the stochastic Navier-Stokes equation. The important point is that the stochasticity level is decided by inlet disturbance intensity. The finite difference method based on the multi-level formulation is also included which can calculate spatial derivatives of physical quantities and integrated quantities accurately. In this report, we compute the transition phenomenon for incompressible flow with injection on the pipe wall. The computations fairly agree with Hof’s experimental results.
UR - http://www.scopus.com/inward/record.url?scp=85044393837&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85044393837&partnerID=8YFLogxK
U2 - 10.2514/6.2018-0589
DO - 10.2514/6.2018-0589
M3 - Conference contribution
AN - SCOPUS:85044393837
SN - 9781624105241
T3 - AIAA Aerospace Sciences Meeting, 2018
BT - AIAA Aerospace Sciences Meeting
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Aerospace Sciences Meeting, 2018
Y2 - 8 January 2018 through 12 January 2018
ER -