scholarly journals A RESEARCH OF DAMPING PROPERTIES OF AQUEOUS FOAM UDER THE IMPACT OF SPHERICAL SHOCK WAVES

2017 ◽  
Author(s):  
R. Kh. Bolotnova ◽  
◽  
E. F. Gaynullina ◽  
Keyword(s):  
Shock Waves ◽  
Damping Properties ◽  
Aqueous Foam ◽  
The Impact ◽  
Spherical Shock

Experimental study of heat transfer in the boundary layer of a flat plate with the impact of weak shock waves on the leading edge

2020 ◽  
Author(s):  
V. L. Kocharin ◽  
A. A. Yatskikh ◽  
D. S. Prishchepova ◽  
A. V. Panina ◽  
Yu. G. Yermolaev ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Boundary Layer ◽  
Experimental Study ◽  
Shock Waves ◽  
Flat Plate ◽  
Leading Edge ◽  
Weak Shock ◽  
The Impact

scholarly journals Modified Nanoclays/Straw Fillers as Functional Additives of Natural Rubber Biocomposites

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 799
Author(s):  
Justyna Miedzianowska ◽  
Marcin Masłowski ◽  
Przemysław Rybiński ◽  
Krzysztof Strzelec
Keyword(s):  
Natural Rubber ◽  
Raw Materials ◽  
Research Work ◽  
Damping Properties ◽  
Main Research ◽  
Functional Additives ◽  
Different Types ◽  
Elastomeric Materials ◽  
Research Goal ◽  
The Impact

Increasingly, raw materials of natural origin are used as fillers in polymer composites. Such biocomposites have satisfactory properties. To ensure above-average functional properties, modifications of biofillers with other materials are also used. The presented research work aimed to produce and characterize elastomeric materials with a straw-based filler and four different types of montmorillonite. The main research goal was to obtain improved functional parameters of vulcanizates based on natural rubber. A series of composites filled with straw and certain types of modified and unmodified nano-clays in various ratios and amounts were prepared. Then, they were subjected to a series of tests to assess the impact of the hybrids used on the final product. It has been shown that the addition of optimal amounts of biofillers can, inter alia, increase the tensile strength of the composite, improve damping properties, extend the burning time of the material and affect the course of vulcanization or cross-linking density.

Study of shocks in a nonideal dusty gas using Maslov, Guderley, and CCW methods for shock exponents

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Swati Chauhan ◽  
Antim Chauhan ◽  
Rajan Arora
Keyword(s):  
Shock Waves ◽  
Mass Fraction ◽  
Strong Shock ◽  
Dust Particles ◽  
Excluded Volume ◽  
One Dimensional ◽  
First Order ◽  
Nonideal Gas ◽  
Spherical Shock ◽  
Strong Shock Waves

Abstract In this work, we consider the system of partial differential equations describing one-dimensional (1D) radially symmetric (i.e., cylindrical or spherical) flow of a nonideal gas with small solid dust particles. We analyze the implosion of cylindrical and spherical symmetric strong shock waves in a mixture of a nonideal gas with small solid dust particles. An evolution equation for the strong cylindrical and spherical shock waves is derived by using the Maslov technique based on the kinematics of 1D motion. The approximate value of the similarity exponent describing the behavior of strong shocks is calculated by applying a first-order truncation approximation. The obtained approximate values of similarity exponent are compared with the values of the similarity exponent obtained from Whitham’s rule and Guderley’s method. All the above computations are performed for the different values of mass fraction of dust particles, relative specific heat, and the ratio of the density of dust particle to the density of the mixture and van der Waals excluded volume.

General Attenuation Laws for Spherical Shock Waves in Pure and Dusty Gases

AIAA Journal ◽  
2001 ◽  
Vol 39 (5) ◽  
pp. 969-971 ◽  
Author(s):  
F. Aizik ◽  
G. Ben-Dor ◽  
T. Elperin ◽  
O. Igra
Keyword(s):  
Shock Waves ◽  
Spherical Shock ◽  
Attenuation Laws

On the Attainability of Fusion Temperatures under High Densities by Impact Shock Waves of Small Solid Particles Accelerated to Hypervelocities

1964 ◽  
Vol 19 (2) ◽  
pp. 231-239 ◽  
Author(s):  
F. Winterberg
Keyword(s):  
Shock Waves ◽  
Heavy Particle ◽  
Target Material ◽  
Particle Beam ◽  
Solid Particles ◽  
Particle Accelerators ◽  
Bremsstrahlung Radiation ◽  
The Impact ◽  
Controllable Size ◽  
Impact Shock

In this paper it is shown that temperatures up to 108°K and under densities of the order 1 g/cm3 are attainable in liquid tritium-deuterium by the impact shock waves of small solid particles accelerated up to velocities of some 107 cm/s in heavy particle accelerators.The high temperatures occur in a focussed particle beam. It is shown that under feasible conditions, the particle beam will generate in the target material a shock wave of the required strength. The particles are charged electrically up to the limit of mechanical breakup and then are accelerated in linear particle accelerators to the required velocities.In order to cut down losses by Bremsstrahlung radiation, the particles must consist of low Z-value material. The most promissing substances in this regard are lithium and beryllium. The "guillotine factor” is of significance at high densities and reduces the Bremsstrahlung losses by a factor of about 1/3.The attainable temperatures are high enough to reach the lowest ignition temperatures for thermonuclear reactions.Apart from the interesting prospect of high temperature, high density experiments, the possibility cannot be excluded to ignite by this method a small fusion explosion of controllable size.

Shock dynamics of strong imploding cylindrical and spherical shock waves with real gas effects

2010 ◽  
Vol 22 (11) ◽  
pp. 116102 ◽  
Author(s):  
Malte Kjellander ◽  
Nils Tillmark ◽  
Nicholas Apazidis
Keyword(s):  
Shock Waves ◽  
Real Gas ◽  
Shock Dynamics ◽  
Real Gas Effects ◽  
Spherical Shock
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