A regulating method for pressure drop of supercritical cracked-kerosene in cooling tube

• Published in: Case studies in thermal engineering Vol. 36; p. 102206
• Main Authors: Zhao, Guo-Zhu, Xiao, Bao-Guo, Wang, Xi-Yao, Li, Xia-Fei
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.08.2022; Elsevier
• Subjects: Actively cooling panel; Flow distribution; Numerical simulation; Pressure drop regulating; Restriction orifice; Restriction orifice; Pressure drop regulating; Numerical simulation; Actively cooling panel; Flow distribution
• ISSN: 2214-157X; 2214-157X
• DOI: 10.1016/j.csite.2022.102206

Flow distribution of kerosene in actively cooling panel is an important factor that constraints the cooling efficiency of the thermal protection system of scramjet. However, the flow mal-distribution is a common phenomenon in the realistic thermal protection system. In order to investigate this problem, a way to regulate the pressure drop via restriction orifice is proposed. The flow, heat transfer and thermal cracking process in cooling tube are calculated using a three-dimensional fluid-solid conjugated simulation method for supercritical cracked-kerosene. The results indicate that with an appropriate restriction orifice, the pressure drop under a lower heat flux can match with that under correspondingly higher heat flux in a same tube, which verifies the feasibility of pressure drop regulating using the restriction orifice. Therefore, this research could provides a design method of flow distribution in actively cooling panel of scramjet.