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Reference number 3603   (Listed in Nov 05, 2009) (Categories Environment and Energy / Mechanics / Aeronautics and Cosmology / Civil Engineering and Architecture)
Simulation of Free Surface Flow
Contents In the laboratory, they are developing a free-surface-flow simulation program for predicting movement of liquid surfaces in various acceleration environments in relation to research on thermal flow phenomena inside a rocket engine and a jet engine. This program is newly developed so as to predict behavior of fuel solution inside a tank which is installed in a liquid rocket and based on CIP-LSM which is an algorithm in consideration to the gravity and the surface tension. This method is effective not only for prediction of behavior of liquid surfaces in dynamic acceleration environments such as sloshing and wave breaking phenomenon (Fig. 1) but also for prediction of a free surface flow which has more surface tension and wettability such as microgravity environments (Fig. 2). They confirm its adequateness by comparing numerical solutions and experimental results. This method can be applied not only to the aerospace field but also to wave phenomena in oceans and rivers, sloshing inside a liquid storage container for inland transportation, atomization phenomena in engine fuel injectors, and further micro flowage phenomena in fine tubes.
We are ready for providing consulting which includes customization of the simulation program and conducting collaborative research with companies and organizations who are interested in this research.
HIMENO,Takehiko, Associate Professor
Graduate School of Engineering, Department of Aeronautics and Astronautics


Fig. 1 Experimental Results from Observation of Large Amplitude Sloshing and Wave Breaking Phenomenon while vibrating Liquid in Container in the lateral direction, and Numerical Analysis Results corresponding to the Experimental Results
(C) HIMENO,Takehiko

Fig. 2 Experimental Results from Observation of Shape Changes in Liquid Surface driven by Wettability of Rectangle Plate in Cylindrical Container while realizing Microgravity Environment with using Drop Tower, and Numerical Analysis Results corresponding to the Experimental Results
(C) HIMENO,Takehiko
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