نتایج جستجو برای: Energy Dissipation

تعداد نتایج: 682739  

Journal: :international journal of civil engineering 0
mohammad reza kavian pour k.n. toosi university of technology, valiasr-mirdamad cross, tehran, iran h.r. masoumi

hydraulics of stepped spillway is a very complicated phenomenon, as it consists of a two phase flow passing through a set of designed steps. the steps increase the rate of energy dissipation taking place on the spillway face. turbulence, flow aeration and energy dissipation are the main tasks in the design of such structures. this study consists of the experimental investigation to determine th...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

seismic retrofit strategies have been developed in the past few decades following the introduction of new seismic provisions and the availability of advanced materials and methods. it can be observed that new approaches to deal with more lateral forces are more innovative and more energy absorbent. in line with this, there is a growing trend toward the use of steel shear walls as a system with ...

Journal: :international journal of civil engineering 0
s. pagliara professor, destec-department of energy engineering,systems, land and construction, university of pisa, via gabba 22, 56122, pisa, italy t. roshni ph.d, destec-department of energy engineering, systems,land and construction, university of pisa, via gabba 22,56122, pisa italy m. palermo ph.d, destec-department of energy engineering, systems,land and construction, university of pisa, via gabba 22,56122, pisa italy

rock chutes are natural river training structures and are efficient energy dissipaters too. from the hydraulic and environmental point of view, rock chutes have become important structures in the natural river morphology. a physical study was conducted and flow properties were measured over rough bed materials of a rock chute, which was assembled at the pitlab center of the university of pisa, ...

Journal: :journal of water sciences research 2012
j bazargan m safakheil

recently the stepped spillways have been used as an appropriate solution for energy dissipation. in the present study, siahbisheh dam spillway is simulated by using computational fluid dynamic (cfd), in which the mixture method and reynolds stresses model (rsm) turbulence model is used. in the first modeling series the over all steppes slope is constant. the number of the steps is increased to ...

Journal: :آب و خاک 0
فتحی فتحی بینا بینا موسوی جهرمی موسوی جهرمی

abstract stepped spillways are of most important hydraulic constructions to dissipation energy of water flow. these constructions are used in opening channel to transfer water from upper level to lower level. because of considerable effect of steps on flow dissipation energy and also the resulted developments in construction of roller competed concrete rcc, the mentioned constructions have draw...

ژورنال: علوم آب و خاک 2022

In the last decade, the use of gabion structures in hydraulic engineering for stabilizing the structure due to its high density and weight has become widespread. Also, the material's roughness and porosity cause it to be used in energy dissipation and drainage projects. This study evaluates the relative energy dissipation of gabion structures downstream of the ogee spillway in the conditions of...

S. Kassa, S. Nema

This paper introduces a peculiar approach of designing Static Random Access Memory (SRAM) memory cell in Quantum-dot Cellular Automata (QCA) technique. The proposed design consists of one 3-input MG, one 5-input MG in addition to a (2×1) Multiplexer block utilizing the loop-based approach. The simulation results reveals the excellence of the proposed design. The proposed SRAM cell achieves 16% ...

Journal: :international journal of advanced structural engineering 2010
rozlyn k. bubela carlos e. ventura helmut g.l prion

experimental tests were performed to study the seismic behavior and performance ofmodified steel chevron braced frame systems, which incorporate a vertical slotted connection(vsc) detail between the top of the braces and the floor beam above. the vsc detail isintended to prevent vertical load transfer to the beam and limit brace forces to thecompressive resistance of the members. full-scale qua...

J Bazargan M safakheil

Recently the stepped spillways have been used as an appropriate solution for energy dissipation. In the present study, Siahbisheh dam spillway is simulated by using Computational Fluid Dynamic (CFD), in which the Mixture method and Reynolds Stresses Model (RSM) turbulence model is used. In the first modeling series the over all steppes slope is constant. The number of the steps is increased to ...

Journal: :Angewandte Chemie 2014
Jörg Meyer Karsten Reuter

We present an embedding technique for metallic systems that makes it possible to model energy dissipation into substrate phonons during surface chemical reactions from first principles. The separation of chemical and elastic contributions to the interaction potential provides a quantitative description of both electronic and phononic band structure. Application to the dissociation of O2 at Pd(1...

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