Heat Transfer, Combustion and Flow Dynamics in Propulsion Systems

• Other Authors: Liu, Jian (Editor), Fu, Qingfei (Editor), Tong, Yiheng (Editor), Liu, Chaoyang (Editor)
• Format: Electronic Book Chapter
• Language: English
• Published: Basel MDPI - Multidisciplinary Digital Publishing Institute 2023
• Subjects: Technology: general issues; History of engineering & technology; porous/lattice structures; thermal management technology; heat transfer enhancement; transpiration cooling; gelled fuel; rheological properties; atomization characteristics; Sauter mean diameter; gas-centered swirl coaxial injector; chamber backpressure; dynamic characteristics; pulsation flow; solid oxide fuel cell; tubular structure; ammonia fuel; multiphysics field simulation; shipborne UAV applications; cryogenic flow boiling; critical heat flux; asymmetric heating; non-circular channels; additive manufacturing; GR-Cop42; departure from nucleate boiling correlation; regenerative cooling; supercritical CO2; heat flux; acceleration; flow pattern; spatial orthogonal bifurcation; chirality; pressure measurement; nonlinear dynamic analysis; vortex structure; endwall film cooling; thermophysical property; turbine vane; coolant coverage; premixed combustion; closed flame system; extreme turbulence; PIV; C-X CH PLIF; liquid film; acoustic oscillations; heat and mass transfer; Kelvin-Helmholtz instability
• Online Access: DOAB: download the publication; DOAB: description of the publication

Propulsion systems based on chemical reaction principles are still the most widely used thrust devices for aircrafts, drawing a lot of research attention. Whether in traditional propulsion systems including aero-engines, rocket engines, ramjets and scramjets, or new developed combined power systems (such as TBCCs and RBCCs), thermal protection, flow dynamics and combustion instabilities in engine systems are still major concerns, especially for high-speed aircraft. Thermal protection has become the biggest issue for hypersonic aircraft experiencing extremely high external aerodynamic heating and internal combustion heat release. Another challenging issue is the risk of combustion instability inside some propulsion systems, which couples with an unsteady heat release process and leads to high thermal load. Some optimized or novel design, analysis and simulated methods have been applied to the structural design, heat transfer and flow dynamics of propulsion systems. New measurement methods have been proposed to realize clear and accurate visualizations of flow field and combustion products, such as high-resolution PIV and burst-mode high frequency LIF. In addition, new concepts have been proposed aiming at improving the efficiency of propulsion systems, such as the application of powder fuel instead of traditional fuels and the application of supercritical fluids and nanofluids in thermal management systems.