Shuto YATSUYANAGI, Hideyuki TANNO

DOI Number: XXX-YYY-ZZZ

Conference number: HiSST2024-00274

Large-eddy simulations of supercritical n-dodecane flow in a horizontal heated circular tube are conducted to clarify the hydrodynamic characteristics under supercritical pressure conditions. The hydrodynamic characteristics curves are evaluated for three different outlet pressure conditions of 2.0, 2.5, and 6.0 MPa. The present LES demonstrates that the hydrodynamic characteristics are expressed as cubic curves at 2.0 and 2.5 MPa conditions. The negative slope region in the hydrodynamic characteristics curve has been recognized as the cause of Ledinegg instability. The present results suggest that Ledinegg instability can occur in supercritical n-dodecane flow in a heated horizontal circular tube. The outcome of the present study contributes to the design of a highly efficient and reliable regenerative cooling system.

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In Categories: 1.Events, HiSST 2024, Thermal and Energy Management
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