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Modelling of hybrid rocket flow-fields with computational fluid dynamics

Ismail, Izham Izzat and Rozainuddin, Nur Husnina Aufa and Nordin, Norhuda Hidayah and Azami, Muhammad Hanafi (2022) Modelling of hybrid rocket flow-fields with computational fluid dynamics. CFD Letters, 3 (14). pp. 53-67. ISSN 2180-1363 E-ISSN 2811-3969

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A low regression rate is a major limitation in the hybrid rocket propulsion system. This paper is to study the regression rate characteristics of a cylindrical solid grain with cryogenic propellants. Paraffin (P) fuel is coupled with two types of oxidizers, namely gaseous oxygen (GOX) and nitrous oxide (N2O). ANSYS software is used as the CFD platform to observe the hybrid rocket flow-fields. The modelling values obtained from the pressure, temperature, velocity, and wall heat flux contours are used to calculate the hybrid rocket performance in terms of regression rate, thrust, specific impulse, characteristic velocity, and exit Mach number. The numerical results show that the mass-flow-inlet boundary conditions, initial design feature, and type of propellant play an important role in the enhancement of hybrid rocket performance. Result shows that enhanced of 68 % of the regression rate, 59 % of thrust, 6 % of specific impulse and exit Mach number, and % of characteristic velocity by improved 50% of mass flow rate. Due to the high flame temperature, the GOX/P propellants produce the best hybrid rocket motor compared with the others.

Item Type: Article (Journal)
Uncontrolled Keywords: Hybrid rocket flow fields;CFD modeling;GOX paraffin;N2O paraffin
Subjects: T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL780 Rockets
T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL787 Astronautics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User: Dr Muhammad Hanafi Azami
Date Deposited: 04 Apr 2022 12:33
Last Modified: 04 Apr 2022 12:34
URI: http://irep.iium.edu.my/id/eprint/97449

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