A5012020777- Heat Transfer Mechanisms
- Turbomachinery Performance and Optimization
- Combustion and Detonation Processes
- Risk and Safety Analysis
- Fire dynamics and safety research
- Fluid Dynamics and Turbulent Flows
- Tribology and Lubrication Engineering
- Heat transfer and supercritical fluids
- Fluid Dynamics and Vibration Analysis
- Structural Response to Dynamic Loads
- Energetic Materials and Combustion
Northwestern Polytechnical University
2018-2024
The valveless U-bend pulse detonation combustor (PDC) offers pressure gain and compact design advantages for gas turbine applications. However, when operating at high frequencies, with fuel high-temperature air supplied passively intermittently in accordance the periodic fluctuations of wave, PDC tends to self-ignite after prolonged operation. To understand characteristics self-ignition, study conducted experimental measurements pressure, flame ion signals, temperature PDC. Numerical methods...
Abstract The heat transfer coefficient of cylindrical holes fed by varying internal cross-flow channels with different Reynolds numbers Rec is experimentally studied on a low-speed flat-plate facility. Three coolant cross flow cases, including smooth case and two ribbed cases 45/135-deg ribs, are at = 50,000, 100,000 blowing ratios M 0.5, 1.0, 2.0. A transient liquid-crystal (LC) measurement technique used to determine the coefficient. At lower M, enhancement regions asymmetrical for 45-deg...
The detonation initiation characteristics of a single tube liquid-fueled pulse combustor (PDC) is investigated at different inlet air temperatures in this paper. inner diameter the PDC 62 mm. Gasoline and are used as fuel oxidant, respectively. temperature 288–523 K operating frequency 10~30 Hz. experimental results show that deflagration to transition (DDT) distance, time, DDT time jet ignition decrease with increasing same temperature. When 288 K, distance shortened from 860.5 mm 787.7...
A conventional axial turbine drived by a pulse detonation combustor heavily challenges the cooling and hot gas sealing. In order to fully understand physical behavior of ingress egress effect with inlet mainstream, study is carried out investigate unsteady flow field sealing efficiency inside cavity using method unsteady, 3-D CFD simulation. The inflow boundary condition simplified simple exponential decay formulas are applied mainstream passage. results reveal that magnitude pressure does...
Abstract Gas turbines have been widely used. With the continuous improvement of performance gas turbines, turbine inlet temperature has greatly exceeded heat resistance limit blade material, so advanced cooling technology is required. The film effectiveness distribution over under effect wake was obtained by Pressure Sensitive Paint (PSP) technique. test 5 rows chevron holes on pressure side, 3 cylindrical leading edge and suction side. mainstream Reynolds number 130,000 based chord length,...
Abstract Gas turbines have been widely used. With the continuous improvement of performance gas turbines, turbine inlet temperature has greatly exceeded heat-resistance limit blade material, so advanced cooling technology is required. The film effectiveness distribution over under effect wake was obtained by pressure-sensitive paint (PSP) technique. test five rows chevron holes on pressure side, three cylindrical leading edge, and suction side. mainstream Reynolds number 130,000 based chord...