Aerospace Science and Technology
Design and Analysis of Supersonic Inlet for Ramjet Engines: Aerodynamic Considerations and Performance Optimization

Mohammad Hossein Moghimi EsfandAbadi; Adnan Mohammadi; Mohammad Hassan Djavareshkian

Volume 17, Issue 1 , June 2024, , Pages 47-59

https://doi.org/10.22034/jast.2023.421137.1165

Abstract
  This research delves into the intricate realm of supersonic inlet design for ramjet engines, honing in on the critical aerodynamic considerations and optimization of performance factors. At Mach 2.5, the study meticulously scrutinizes pivotal design parameters, including the placement and number of inclined ...  Read More

Aerospace Science and Technology
Numerical Study of Flattened Miniature Heat Pipe with Hybrid Porous Wick and Double Heat Sources

G. R. Abdizadeh; Sahar Noori; Mohammad Saeedi; Hamidreza Tajik

Volume 16, Issue 2 , October 2023, , Pages 74-85

https://doi.org/10.22034/jast.2023.400610.1154

Abstract
  Designing flattened miniature heat pipes (FMHPs) for electronic devices is a challenging issue due to high heat flux and limited heat dissipation space. It requires understanding the combined effects of the sintered-grooved wick structure, double heat sources, and flat thickness on heat pipes' thermal ...  Read More

Aerospace Science and Technology
Numerical study of flow visualization and thermal performance for pulsating heat pipes

Sam Mohamad Hassan Pouryoussefi; Sohrab Gholamhosein Pouryoussefi

Volume 15, Issue 2 , October 2022, , Pages 17-24

https://doi.org/10.22034/jast.2022.346070.1119

Abstract
  Importance of study of pulsating heat pipes (PHPs) behavior and limitations in conducting experimental studies, the necessity of numerical simulations is getting critical in this area. In present work, numerical simulations are carried out for pulsating heat pipes. Thermal performance of closed loop ...  Read More

Aerospace Science and Technology
Numerical simulation of combustion with the aim of obtaining temperature distribution, identifying and eliminating power reduction factors of a gas turbine engine

Hamed Arhami; Mohammad Mazidi Sharfabadi

Volume 15, Issue 2 , October 2022, , Pages 97-109

https://doi.org/10.22034/jast.2022.302883.1097

Abstract
  In this research, combustion modeling inside the combustion chamber of a typical turboprop engine has been investigated. The complex geometry of this combustion liner was modeled according to the technical drawings and the turbulent flow and internal combustion were simulated numerically and three-dimensionally. ...  Read More

An Innovation in Film Cooling of the Gas Turbine Blades Applying an Upstream Jet

M.R. Salimi; M. Taeibi Rahni; Mahdi Ramezanizadeh

Volume 9, Issue 1 , March 2012

Abstract
  A new design concept is introduced to control the near-wall integration between the hot-gas boundary layer and the cooling jets in order to enhance the adiabatic film cooling effectiveness of the gas turbine blades. In this new approach, another film cooling port, having a very low blowing ratio, which ...  Read More