Because of the low value convective heat transfer coefficient between absorber plate and air, thermal efficiency a solar air heater is greatly reduced, resulting in high temperatures large losses to surrounding environment. The analysis transmission presented this research, which makes use Computational Fluid Dynamics. An investigation conducted into effect Reynolds number on Nusselt friction f...

Solar drying technology has been widely used in engineering fields such us chemical because of its low cost and pollution advantages. In this review, the structural forms, materials coatings heat-absorbing panels flat plate solar air collector are classified, experimental theoretical results performance level panel summarized. indoor tests, energy efficiency is 30% to 79%, applications 28% 62%.

Aeration effects on impact have been investigated by dropping a flat plate onto the water surface, in which the water is aerated to various degrees. An experimental study has been carried out in the newly commissioned Ocean Basin at Plymouth University’s COAST Lab. The falling block comprises a rigid impact plate connected to two driver plates and its total mass can be varied between 32 kg and ...

The problem of finding the flow over a finite flat plate aligned with a uniform free stream is revisited. Multigrid is used to obtain accurate numerical solutions up to a Reynolds number of 4000. Fourier boundary conditions keep the computational domain small, with no loss of accuracy. Near the trailing edge, excellent agreement with first-order triple-deck theory is found. However, previous co...

Flashing light effect on microalgae could significantly improve the light efficiency and biomass productivity of microalgae. In this paper, the baffles were introduced into the traditional flat plate photobioreactor so as to enhance the flashing light effect of microalgae. Making Chlorella sp. as the model microalgae, the effect of light intensity and inlet velocity on the biomass concentration...

Roughness elements in high speed flows can cause laminar-turbulent transition leading to higher heating rates and drag. Transition of flow past a hemispherical bump placed on a flat plate is explored in this paper for three Mach numbers [3.37, 5.26, 8.23] using direct numerical simulation on unstructured grids. The simulation parameters are chosen to match the experiments carried out by Danehy ...

In this paper, we investigate highly rarefied jet gas flows out of a two-dimensional slit that impinges on a flat plate which is set vertically to the plume flow direction. The plate is assumed to be completely diffusive and the gaseous plume flow out of the slit is modeled with a Maxwellian distribution function which is characterized with known number density, nonzero exit velocity, and tempe...

This paper investigates the nature of the development of two-dimensional laminar flow of an incompressible fluid at the reversed stagnation-point. ”. In this study, we revisit the problem of reversed stagnation-point flow over a flat plate. Proudman and Johnson (1962) first studied the flow and obtained an asymptotic solution by neglecting the viscous terms. This is no true in neglecting the vi...

DURING the development of the hydrodynamic theory of the peak and minimum pool boiling heat flux there have lingered certain questions about the Taylor wavelength in the liquidvapor interface and the spacing of the grid of jets or bubble release nodes. Zuber [i] originally used the most susceptible twodimensional Taylor wavelength. L,, in his analysis. He envisioned that the vapor jets, which b...