On the modified dispersion-controlled dissipative (DCD) scheme for computation of flow supercavitation

Dynamics of unsteady cavitating flow in compressible two-phase fluid

“…These TEMs have been widely used in a variety of numerical simulations of cavitating flows. Another class of cavitation models, single fluid model (Coutier-Delgosha et al, 2003;Hu et al, 2011), however, consider the phase transition process with an infinite phase rate, i.e., a direct density-pressure dependency is constructed. This model, however, may lose some flow features and information associated with small-scale motions.…”

“…A detached shock forms in front of the projectile, while an attached supercavity forms behind the shock. This phenomenon has been simulated by Hu et al (2011) by using a single fluid model and density-based algorithm. However, in the published literatures, there still appears to be a lack of extending the pressure-based, or SIMPLE-like, method for compressible cavitating flow computations.…”

Experimental study on the dynamics of an oscillating bubble in a vertical rigid tube

“…At the beginning stage of the bubble collapse phase the downward jet (second jet) is developed. This jet eventually penetrates the bubble and transforms it into a torus (see frames [13][14][15].…”

“…The jet originates on the bubble boundary, which is farthest away from the rigid surface and penetrates the bubble and impacts on the bubble surface closest to the rigid surface. Destructive effects of cavitation aside, this phenomenon can also be harnessed for good use in some industrial applications such as supercavitating flow for the reduction of hydrodynamic drag [13] and surface cleaning [25]. The collapsing bubbles are also useful in biomedical applications such as kidney stone shock wave lithotripsy [14,5], in drug and gene delivery into biological cells by enhancing the permeability of the cell membrane [26], and tumor and cancer therapy [27].…”

On the numerical technique for the simulation of hypervelocity test flows

“…(The numbers in the boxes represent different flow conditions, e.g., 1: pre-psw or the initial filling conditions in the shock tube, 2: post-psw or the driven gas, 3: post-pcs or the driver gas, 4: initial filling condition in the detonation tube, 5: post-scs or the test flow in the acceleration tube, 6: post-ssw or the accelerated gas, 7: pre-ssw or the initial filling condition in the acceleration tube, respectively.) simulation of flow supercavitation using DCD scheme [31]. The flux splitting algorithm for the original DCD scheme is schematically shown in Fig.…”