The overall hydrothermal performance of a microchannel is greatly dependent on the pressure drop associated with flow characteristics. Thermal can be enhanced by inserting longitudinal vortex generator (LVG) into microchannel. However, increases simultaneously considerable amount, which restricts from being improved. Here, in present study, LVG considered porous, and three-dimensional conjugate heat transfer study conducted to analyze effect porous porosity, orientation, number LVGs (N) are...

Flow around an extended triangular solid (thorn) attached to a square cylinder is investigated numerically. The numerical analysis carried out at low Reynolds number, Re = 100 & 180 for different non-dimensional thorn lengths (l΄ 0. 2, 0.4 0.6), inclination angles (θ 5°, 10°, 15° and 20°) two positions. It found that drag lift reduction can be achieved by attaching the on cylinder. observed fluctuation of force as well reduced there comparatively large variation when placed front stagnation...

Antireflective coating on front glass of superstrate-type single junction amorphous silicon solar cells (SCs) has been applied using highly monodispersed and stable silica nanoparticles (NPs). The NPs having 300 nm diameter were synthesized by Stober technique where the size was controlled varying alcohol medium. analysed dynamic light scattering Fourier transform infrared spectroscopy. spin coated side fluorinated tin oxide (SnO2: F) superstrate optimization concentration colloidal...

Improvement of the effectiveness heat exchanger is demand compact and efficient cooling devices. In that respect, a numerical study fluid flow transfer has been conducted with different arrangements simple vortex generator (VG) in rectangular microchannel Reynolds number (Re) range between 200 1100. The combined effect spanwise pitchwise distance VG on investigated rigorously to observe dependence both. By processing predictions through gene expression programing genetic algorithm...

The present study aims to predict the heat transfer characteristics around a square cylinder with different corner radii using multivariate adaptive regression splines (MARS). Further, MARS-generated objective function is optimized by particle swarm optimization. data for prediction are taken from recently published article authors [P. Dey, A. Sarkar, A.K. Das, Development of GEP and ANN model unsteady forced convection over cylinder, Neural Comput. Appl. (2015) 1–13]. MARS compared...

Numerical analysis of two dimensional steady flows over a triangular extended solid (thorn) attached to square cylinder positioned at front stagnation point and rear separately is reported low Reynolds number (Re = 40). The variation thorn length (l′ 0.2, 0.4 & 0.6) inclination angle (Θ 5°, 10°, 15° 20°) its effect on the drag, pressure, shear stress, boundary layer as well inertia force viscous are interest. There comparatively large drag when placed side instead placing rear. recirculation...

A multidimensional optical nonlinear spectrometer (MONSTR) is a robust, ultrastable platform consisting of nested and folded Michelson interferometers that can be actively phase stabilized. The MONSTR provides output pulses for excitation materials phase-stabilized reference heterodyne detection the induced signal. This generates square identical laser adjusted to have arbitrary time delays between them while maintaining stability. arrangement ideal performing coherent experiments, such as...

We report the detailed hydrodynamics over micro-grooved substrates in a confined hydrophobic microfluidic environment. In sharp contrast to traditional premises, liquid-air interface shape or interfacial slip velocity is not presumed priori. compare our results with reported analytical solutions of low Reynolds number flow Navier boundary condition considering predefined flat interface. Discrepancies between such simplified and comprehensive here clearly suggest critical implications...

We bring out a critical force for shape transition of air-water meniscus in superhydrophobic triangular microgrooves under dynamic conditions, considering an intricate interplay the viscous and capillary forces. A closed form theoretical expression depicts its explicit dependence on groove geometry relevant physical properties. negative value this denotes convex shape, whereas positive signifies concave shape. Considering transition, pressure is further interpreted to denote condition which...

We have performed a three-dimensional numerical simulation to determine the effect of local atmospheric pollution level on spreading characteristics severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus through ejected droplets during sneezing and coughing in an open space. Utilizing finite volume-based method, we computations for various ranges droplet diameters speeds. The interactions between suspended particles are considered by taking both hydrophobic hydrophilic...