Results 21 to 30 of about 78,208 (259)

Investigation on the Reflection Coefficient for Seawalls Protected by a Rubble Mound Structure

open access: yesJournal of Marine Science and Engineering, 2021
Sea wave reflection from coastal protection structures is one of the main issues in the coastal design process. Several empirical formulas have been proposed so far to predict reflection coefficient from rubble mound breakwaters and smooth slopes.
Luigi Pratola   +6 more
doaj   +1 more source

Normal Reflection Characteristics of One-Dimensional Unsteady Flow Shock Waves on Rigid Walls from Pulse Discharge in Water

open access: yesShock and Vibration, 2017
Strong shock waves can be generated by pulse discharge in water, and the characteristics due to the shock wave normal reflection from rigid walls have important significance to many fields, such as industrial production and defense construction.
Dong Yan, Jinchang Zhao, Shaoqing Niu
doaj   +1 more source

3D simulation of stress wave propagation in jointed rock mass with filling joint

open access: yesShuili Shuiyun Gongcheng Xuebao, 2020
In order to study the propagation characteristics of stress wave in rock mass with filling joints, the Three- Dimension Distinct Element Code was used to explore the influence of different occurrence joints on the penetration and reflection rules of P ...
DING Yingxun   +2 more
doaj   +1 more source

Reflection of Strong Blast Waves [PDF]

open access: yesThe Physics of Fluids, 1964
The reflection of strong point-source blast waves is studied using the continuum concept of flow of ideal gases. Methods of obtaining the upper and lower bounds as well as a Taylor series expansion of the position of the reflected shock is considered. The procedure of studying the flow variables near the reflected shock is also described.
Chang, Tien Sun, Laporte, Otto
openaire   +3 more sources

Reflected waves and quantum gravity

open access: yesPhysical Review D, 2023
In the context of canonical quantum gravity, we consider the effects of a non-standard expression for the gravitational wave function on the evolution of inflationary perturbations. Such an expression and its effects may be generated by a sudden variation in the (nearly constant) inflaton potential.
Leonardo Chataignier   +3 more
openaire   +3 more sources

Physical Experimental Study on the Wave Reflection and Run-Up of a New Ecological Hollow Cube

open access: yesJournal of Marine Science and Engineering
Implementing quadrangular hollow blocks on breakwaters is a common method for wave mitigation and ocean disaster prevention. In order to improve the wave-damping performance of conventional quadrangular hollow blocks, a new quadrangular hollow block is ...
Haitao Zhao   +7 more
doaj   +1 more source

Limitations of augmentation index in the assessment of wave reflection in normotensive healthy individuals.

open access: yesPLoS ONE, 2013
ObjectivesAugmentation index (AIx) is widely used as a measure of wave reflection. We compared the relationship between AIx and age, height and sex with 'gold standard' measures of wave reflection derived from measurements of pressure and flow to ...
Alun D Hughes   +6 more
doaj   +1 more source

On the Reflection of a Spherical Sound Wave from a Finite Size Surface

open access: yesApplied Sciences
Room acoustics computer models based on geometrical acoustics usually handle the sound reflections by the assumption of plane waves. However, if the sound source is a point source, which is usually the case, the spherical wave reflection would be more ...
Jens Holger Rindel
doaj   +1 more source

Wave transmission and reflection of waves “The myth is in their use”

open access: yesArtery Research, 2012
Arterial input impedance, as complete description of the arterial system, is explained by waves and wave reflection. Without wave reflections input impedance would equal aortic characteristic impedance and pressure and flow wave shapes would be similar.
Westerhof, N., Westerhof, B.E.
openaire   +4 more sources

OBLIQUE SHOCK WAVE REFLECTION FROM THE WALL [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2015
Regular and Mach (irregular) reflection of an oblique shock wave from the wall is considered. Criteria for the transition from regular to irregular reflection are described: von Neumann criterion and the criterion for fixed Mach configuration. Specific
P. V. Bulat   +2 more
doaj   +1 more source

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