Propagation of hydrogen-oxygen detonation wave in an abruptly expanding chamber and a gradually expanding chamber was simulated by solving the axisymmetrical Euler equations. The dispersion- control dissipation scheme (DCD) and a detailed chemical reaction kinetics model with 8 sections 20 reactions were adopted.
The multidimensional dissipation scheme was developed and included in the upwinding algorithm for unstructured triangular meshes to improve the computed shock wave resolution.
Based on the flood discharging characteristics of the Qiapuqihai water control project and the hydraulic model test research, a practical flood energy dissipation scheme is put forward.
Based on hydraulic model test, an energy dissipation scheme with the combination of angle-cut stepped dam face and bed flow stilling basin was recommended.
The test results show that:(1) an energy dissipation scheme with combination of angle-cut stepped dam face and bed flow stilling basin is recommended,the rate of energy dissipation of dam is obviously increased,and the joint problem between overflow dam discharge and stilling basin is solved.
With the help of a simple technique, the capability of the Jameson-Schmidt-Turkel numerical dissipation scheme has been enhanced to include hypersonic flows.
Figure 13 shows the results without applying a vorticity con nement, using the CUSP dissipation scheme.
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Due to the linear nature of the solutions with respect to x, a first order scalar dissipation scheme was used.
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The flood releasing energy dissipation scheme of combining the surface holes with the flood releasing and sediment flushing bottom holes was adopted in the Dachaoshan Hydropower Station When the flood flow is in the middle and small discharge, the flood releasing and sediment flushing bottom holes, the sand flushing holes and the power generating unit will be jointly used to release flood When the flood flow is in the middle and large discharge, the surface holes, the flood releasing a...
Based on the flood discharging characteristics of the Qiapuqihai water control project and the hydraulic model test research, a practical flood energy dissipation scheme is put forward. This flood energy dissipation system has remarkably relieved the scouring effect of plunging flow on the d/s river bedrock and met the project's requirements for flood energy dissipation
An investigation of toroidal shock wave motion in a cylindrical shock tube is described in this paper. Numerical simulations were carried out by using dispersion controlled dissipation scheme (DCD scheme) and validated with experimental data. From the numerical results, the toroidal shock wave diffraction, focusing and reflection were discussed in detail. It was found out that the key factor of cylindrical shock focusing is the shock acceleration when diffracting shock waves propagate towa...