As a crystal grows, the temperature distribution of and melt will change. It is necessary to study dynamic process single-crystal growth. Due relatively low crystallization rates used in industrial Czochralski growth system, steady state compute flow. A two-dimensional axisymmetric model whole furnace was established. The large-size bulk β-Ga2O3 single using method has been numerically analyzed...

Hypersonic flows around spatial vehicles during their reentry phase in planetary atmospheres are characterized by intense aerothermal phenomena. The aim of this work is to analyze high temperature flows around an axisymmetric blunt body taking into account chemical and vibrational non-equilibrium for air mixture species. For this purpose, a finite volume methodology is employed to determine the...

The effect of a statistically anisotropic distribution of stretched vortices in the LundgrenTownsend model of the fine-scale structure of homogeneous turbulence is considered. Lundgren’s argument that anisotropy does not affect the three-dimensional energy spectrum is confirmed. Examples of velocity derivative moments and one-dimensional vorticity spectra are worked out for the case of an axisy...

The transition from laminar to complex spatio-temporal dynamics of a plume driven by a localized heat source at the bottom of an enclosed cylinder whose sidewall is maintained at a fixed temperature which varies linearly up the wall is studied. Restricting the dynamics to the axisymmetric subspace, the first instability is to a puffing state. However, for smaller Grashof numbers, the plume beco...

The effect of the instability interface morphology due to mechanical disturbances and acceleration changes (or gravity flutter) on Marangoni convective stability has been confirmed via space experiments. However, compared with research convection an axisymmetric liquid bridge, transition flow behavior a non-axisymmetric bridge is not sufficiently deep. Based thermal-buoyant capillary (TBCC) exp...

Abstract—Hypersonic flows around spatial vehicles during their reentry phase in planetary atmospheres are characterized by intense aerothermodynamics phenomena. The aim of this work is to analyze high temperature flows around an axisymmetric blunt body taking into account chemical and vibrational non-equilibrium for air mixture species and the no slip condition at the wall. For this purpose, th...

This note discusses a rigorous mathematical formulation for the evolution of the Eliassen balanced vortex. It is first shown that a stable balanced vortex of finite extent can be embedded in an ambient fluid at rest, and that such a vortex exists for prescribed angular momentum and potential temperature on fluid parcels. This uses a method developed by Shutts, Booth and Norbury. This is a diffe...

The transition from laminar to complex spatio-temporal dynamics of plumes due to a localized buoyancy source is studied numerically. Several experiments have reported that this transition is sensitive to external perturbations. Therefore, a well-controlled set-up has been chosen for our numerical study, consisting of a localized heat source at the bottom of an enclosed cylinder whose sidewall i...

A heavy ion beam probe (HIBP) is a unique diagnostic method to measure the electric potential in magnetically confined high temperature plasmas. Its fine probing beam and well-collimated secondary beam detector give this diagnostic good spatial resolution, which together with the good time resolution make it powerful in probing plasma interior both in steady state and transient state. There are...