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Numerical Simulation of Three-Dimensional Supercritical Water Flows in Hydrothermal Synthesis Reactors With Arbitrary Geometry

[+] Author Affiliations
Takashi Furusawa, Shibo Qi, Satoru Yamamoto

Tohoku University, Sendai, Japan

Paper No. AJKFluids2015-03096, pp. V01AT03A002; 7 pages
doi:10.1115/AJKFluids2015-03096
From:
  • ASME/JSME/KSME 2015 Joint Fluids Engineering Conference
  • Volume 1A: Symposia, Part 2
  • Seoul, South Korea, July 26–31, 2015
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5721-3
  • Copyright © 2015 by JSME

abstract

Numerical simulations of mixing flows of supercritical (SC) water and water liquid in a 3-D T-shaped circular pipe and a 3-D cross pipe are conducted using the numerical method developed by our group. The 3-D geometry is generated by Building-Cube Method (BCM) with the stepwise wall treatment. Numerical results of mixing flows in the two pipes are compared and the effect of the inlet temperature is evaluated. In the T-shaped circular reactor, the mixing is periodic and a vortex is observed at the mixing point. The mixing form certainly depends on the SC water temperature. In the counter flow reactor, the SC water flow becomes unsteady and is mixed with water liquid asymmetrically due to the rapid change of thermophysical properties and the buoyancy effect.

Copyright © 2015 by JSME

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