Microbursts have been simulated and studied using different physical and numerical modeling methods. In the present study, the steady impinging jet model was comprehensively studied by using a 2-footdiameter (0.61 m) microburst simulator available in the Department of Aerospace Engineering at Iowa State University. Point measurements and Particle Image Velocimetry (PIV) results revealed a detai...

Soft tissue damage has been observed in hip joints with pathological geometries. Our primary goal was to study the relationship between morphological variations of the bony components of the hip and resultant stresses within the soft tissues of the joint during routine daily activities. The secondary goal was to find the range of morphological parameters in which stresses are minimized. Computa...

The impinging shock of varying strengths on the free shear layer in a confined supersonic cavity flow is studied numerically using detached eddy simulation. resulting spatiotemporal variations are analyzed between different cases unsteady statistics, x–t diagrams, spectral analysis, and modal decomposition. A length to depth ratio [ L / D ] = 2 at freestream Mach number M ? 1.71 considered be p...

The flow field and erosion pattern of continuous and pulsating impinging jets has been studied experimentally. The mean velocity field as well as turbulent and pulsation components, wall pressure and wall shear stress distr ibutions were investigated in an axisymmetric air jet impinging upon a rough wall. The results show how harmonic velocity pulsations at the nozzle affect both the mean and t...

Antenna array has been used in many fields such as radar, sonar, electron reconnaissance and seismic data processing. The direction-of-arrival(DOA-) estimation of signals impinging on an array of sensors is a fundamental problem in array processing [1–5]. Angle estimation and frequency estimation [6, 7] are two key problems in the signal processing field. The problem of joint DOA and frequency ...

in this study, confined impinging liquid jets are used to produce nanoparticles of carbamazepine (cbz). the effect of operating parameters, such as the kind of solvent,cbz concentration, flow rate of solution and antisolvent on particle size, are experimentally investigated. the scanning electron micrograph (sem) photomicrographs show that nanodrug with smaller particle is achievable by using s...

Newtonian impinging jets have been investigated for decades. However, limited is known about non-Newtonian impinging jets. The present work attempts to improve this situation by performing high-fidelity numerical simulations of non-Newtonian impinging jet dynamics. Emphasis is placed on the near field of the liquid sheet formed by the impingement of two shear-thinning (viscosity deceases with i...

We introduce the sparse direct sampling method (DSM) to estimate properties of a region from signals that probe region. demonstrate sparse-DSM on two separate problems: estimating both angle-of-arrival radio wave impinging an array and location shape inhomogeneity scattered acoustic waves. The is qualitative in nature, so it does not require simulation forward problem solve inverse problem. gen...

To study the influence of impinging height H/D on flow field characteristics oblique submerged jets, numerical calculation an jet was carried out based Wray–Agarwal (W–A) turbulence model. The structure and pressure distribution under various heights (1 ≤ 8) when angle θ = 45° were analyzed. results show that with increase in height, diffusion degree gradually increased velocity decreased reach...