نتایج جستجو برای: numerical calculation

تعداد نتایج: 424241  

Journal: :international journal of nano dimension 0
h. hoseinkhani department of physics, faculty of science, i.h.u tehran, iran. m. a. talebian darzi department of physics, faculty of science, i.h.u tehran, iran. m. abdollahi department of physics, faculty of science, i.h.u tehran, iran.

interaction and correlation effects in quantum dots play a fundamental role in defining both their equilibrium and transport properties. numerical methods are commonly employed to study such systems. in this paper we investigate the numerical calculation of quantum transport of electrons in spherical centered defect ingaas/algaas quantum dot (scdqd). the simulation is based on the imaginary time...

Journal: :iranian journal of materials forming 2015
m. a. moazam a. ghasemi m. moradi h. monajatizadeh

final step of rail manufacturing is cold rolling straightening process and it hassignificant effects on mechanical properties, straightness, flatness and development of residualstresses. measurement of residual stresses after straightening process is obligated by railmanufacturing standards. in the present investigation, an attempt has been made to evaluateresidual stresses after straightening ...

Journal: :Computers in Physics 1991

Journal: :journal of petroleum science and technology 0
liu jun school of civil engineering and architecture, southwest petroleum university, chengdu 610500, china wang wei school of civil engineering and architecture, southwest petroleum university, chengdu 610500, china zhang jian zhong drilling technology research institute of jidong oil field company, hebei, 063000, china xiao guo hua drilling technology research institute of jidong oil field company, hebei, 063000, china

according to the temperature distribution of water injection well-bore in highly deviated wells under different conditions and unstable temperature field heat conduction principles, a true three-dimensional model was established to analyze the law of variation on temperature of highly deviated wells during the water injection process, and to analyze the factors that influence the water injectio...

Journal: :CoRR 2007
B. O. Rodrigues L. A. C. P. da Mota L. G. S. Duarte

The vast use of computers on scientific numerical computation makes the awareness of the limited precision that these machines are able to provide us an essential matter. A limited and insufficient precision allied to the truncation and rounding errors may induce the user to incorrect interpretation of his/hers answer. In this work, we have developed a computational package to minimize this kin...

Journal: :Physical review letters 2014
Daniel Asenjo Fabien Paillusson Daan Frenkel

We present numerical simulations that allow us to compute the number of ways in which N particles can pack into a given volume V. Our technique modifies the method of Xu, Frenkel, and Liu [Phys. Rev. Lett. 106, 245502 (2011)] and outperforms existing direct enumeration methods by more than 200 orders of magnitude. We use our approach to study the system size dependence of the number of distinct...

Journal: :مکانیک هوافضا 0
rasool safdarian

because of high strength to weight ratio, 6061 aluminum has many applications in different industries like automotive and aerospace industries and can help to reduction of fuel consumption. forming limit diagram (fld) is a useful method for sheet metal formability identification. whereas calculation of forming limit diagram by experimental tests is expensive and time consumption, in the present...

Journal: :Computers & Mathematics with Applications 1978

Journal: :International Journal of Modern Physics E 2007

Journal: :Nuclear Physics B - Proceedings Supplements 1999

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