Ground Test Loop for Interfacial Behaviors and Heat Transfer Characteristics in Boiling Two Phase Flow (JEM-TPF)

Kawasaki, Hiromu; Fujii, Kiyosumi; Sawada, Kenichiro; Sakai, Takashi; Baba, Soumei; Shinmoto, Yasuhisa; Kawanami, Osamu; Asano, Hitoshi; Imai, Ryouji; Suzuki, Koichi; Ohta, Hiroyuki

doi:10.2514/6.2011-5141

Cited by 2 publications

(1 citation statement)

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“…The first is the wickless-type 2PMPFL, which uses a mechanical pump to circulate the working fluid. Existing research on wickless-type 2PMPFLs includes studies conducted on the ground and on the Kibo module of the international space station, to investigate the two-phase flow boiling phenomena in the evaporator [22][23][24][25][26][27][28]. In the wickless-type 2PMPFL, the two-phase flow boiling behavior in the evaporator is difficult to predict, given the lack of vapor-liquid separation.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Wick-Type Two-Phase Mechanically Pumped Fluid Loop for Thermal Control of Electric Aircraft Motors

2022

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The development of thermal control systems has become an important issue in next-generation electric aircraft design due to the increase in heat exhausted with electrification. In this paper, a wick-type two-phase mechanically pumped fluid loop system for future electric aircraft was proposed through the investigation of current two-phase flow cooling technology. Taking the experimental electric aircraft X-57 as an example, a wick-type two-phase mechanically pumped fluid loop with four evaporators for transporting 12 kW of waste heat within an 80 °C temperature limit was proposed and its feasibility was confirmed. A numerical model was constructed and validated to predict the operating characteristics of a two-phase mechanically pumped fluid loop. The optimal pump outputs under-even and uneven heat load conditions and was investigated for the first time by considering the vapor-liquid separation conditions in each flow path and the power consumption of the pump. Under the optimal pump output condition, the operating characteristics of the wick-type two-phase mechanically pumped fluid loop system were calculated. The calculation results indicate that the proposed wick-type two-phase mechanically pumped fluid loop is suitable as the thermal control system for an X-57 electric aircraft motor, as the calculation results satisfied the operational requirements of the motor.

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Section: Introductionmentioning

confidence: 99%