Thermoacoustic system is one of the alternative technologies that provides green working principles but lack understanding complex fluid flow and energy transfer interactions within structures inside leading to difficulty in accurate analysis related system. This study presents dynamic investigation vortex shedding velocity profile an oscillatory across a parallel-plate structure standing-wave ...

A lattice Boltzmann (LB) method based on the linearized Boltzmann Bhatnagar-Gross-Krook equation for numerical simulation of oscillatory (unsteady) Stokes flow is proposed. Unlike the conventional (nonlinear) LB method that utilizes the time domain exclusively, the proposed method is formulated in the frequency domain to allow for direct access to the complex-valued stress, force, and velocity ...

The pour plate method of counting bacteria is more precise than the streak plate method, but, on the average, it will give a lower count.

Exact expressions for dimensionless velocity and shear stress fields corresponding to two unsteady motions of incompressible upper-convected Maxwell (UCM) fluids through a plate channel are analytically established. The porous effects taken into consideration. fluid motion is generated by one the plates which moving in its plane obtained solutions satisfy all imposed initial boundary conditions...

When an airgun releases high-pressure gas underwater below ice plate, it is observed that a bubble formed rapidly while the plate broken fiercely. In order to study ice-water-gas interaction during this transient and violent phenomenon, set of laboratory-scale devices was designed series icebreaking experiments were carried out. High-speed photography used capture evolution plate. It found had ...

Wedge waves are waveguide modes localized near the edge of an elastic wedge and propagating at a speed lower than bulk surface existing in material. These some interest to practice. The purpose this paper is develop calculation methods based on analysis problem for viscoelastic plates, calculate relative phase velocities along wedge-shaped plate. represented as plates variable thickness. basic ...

The arolium in Lycorma delicatula is shaped as a truncated pyramid, tapering proximally. The base or the terminal area is corrugated, forming parasagittal wrinkles (period 1.5-5.0 microm), which are supported from inside by cuticular dendrites. Side faces of the arolium are made up of sclerotized dorsolateral plates. When claws slip on a smooth substrate and pronate, the dorsolateral plates div...

We carry out the spatially periodic homogenization of nonlinear bending theory for plates. The derivation is rigorous in the sense of Γ-convergence. In contrast to what one naturally would expect, our result shows that the limiting functional is not simply a quadratic functional of the second fundamental form of the deformed plate as it is the case in nonlinear plate theory. It turns out that t...

The frequency spectrum of the Casimir force between two plates separated by vacuum as it appears in the Lifshitz formalism is reexamined and generalised as compared to previous works to allow for imperfectly reflecting plates. As previously reported by Ford [Phys. Rev. A 48 (1993) 2962], the highly oscillatory nature of the frequency dependence of the Casimir force points to possibilities for v...

Receptivity and stability of supersonic boundary layers over blunt flat plates and wedges are numerically investigated at a free stream Mach number of 3.5 and at a high Reynolds number of 10/inch. Both the steady and unsteady solutions are obtained by solving the full Navier-Stokes equations using the 5-order accurate weighted essentially non-oscillatory (WENO) scheme for space discretization a...