Detached Eddy Simulations are performed for unsteady three-dimensional supersonic turbulent flow over an open L/D = 5 cavity at free-stream Mach number of 1.19. Numerical results are obtained from the explicit solution and Shear-Stress-Transport based simulations using the 3 order Roe scheme. Computational results are presented for the unsteady vortex and shock structures. The acoustic response...

A 56-year hypertensive, multiparous woman presented to the cardiology unit with Canadian Cardiovascular Society (CCS) class-III angina and worsening dyspnea for the past few weeks. Her clinical examination showed high blood pressure and mid-systolic crescendo-decrescendo murmur radiating to carotids. However, there was no radio-femoral delay or significant blood pressure difference between her ...

Sound propagation through a rarefied gas inside a two-dimensional cavity is investigated on the basis of the linearized Boltzmann equation, where one of the cavity walls oscillates harmonically in the direction normal to its own surface and is considered as a sound source. An analytical solution at high oscillation frequencies is obtained and detailed numerical results for a wide range of gas r...

Coupling electromagnetic waves in a cavity and mechanical vibrations via the radiation pressure of photons is a promising platform for investigations of quantum-mechanical properties of motion. A drawback is that the effect of one photon tends to be tiny, and hence one of the pressing challenges is to substantially increase the interaction strength. A novel scenario is to introduce into the set...

Salkin (1) has recently studied normal physiological changes which occur in the abdominal cavity. He has described a process of adaptability in the abdominal muscles which tends to prevent changes in intra-abdominal pressure, and which he terms " abdominal accommodation." He considers this process to be a reflex mechanism dependent upon an intact neuromuscular system, and points out the clinica...

Lung ventilation in Siren lacertina was studied using X-ray video, measurements of body cavity pressure and electromyography of hypaxial muscles. S. lacertina utilizes a two-stroke buccal pump in which mixing of expired and inspired gas is minimized by partial expansion of the buccal cavity during exhalation and then full expansion after exhalation is complete. Mixing is further reduced by the ...

We developed a model to demonstrate how a hopping kangaroo breathes. Interestingly, a kangaroo uses less energy to breathe while hopping than while standing still. This occurs, in part, because rather than using muscle power to move air into and out of the lungs, air is pulled into (inspiration) and pushed out of (expiration) the lungs as the abdominal organs "flop" within the kangaroo's body. ...

Objective. The aim was to assess the intraperitoneal spread of endometrial cells during hysteroscopy. Study Design. Seventy-six women were submitted to a hysteroscopy with CO(2) under a low pressure. Group 1 had not previous diagnosis of endometrial cancer, and group 2 had previous diagnosis of endometrial cancer (stage I-92.3%). Two peritoneal washing samples were taken before (PW1) and immedi...

In a severe accident, molten corium may penetrate the reactor pressure vessel and enter cooling water in cavity, then steam explosion occur. Steam explosions can initiate waves threaten structural integrity of cavity. To investigate propagation characteristics waves, including pattern, attenuation, amplification under TNT detonation, coupled numerical approach combined with arbitrary Lagrangian...