نتایج جستجو برای: kiva

تعداد نتایج: 158  

Journal: : 2021

This article analyzes the results of a numerical study effect initial injection mass and temperature oxidizer on tridecane (C13H28) combustion process. During research work, KIVA software package was used. Based performed simulation, distribution fuel droplets concentration CO2 were obtained for various values injected liquid in chamber. After analyzing study, it turned out that effective is 9 ...

2009
W. G. Lee R. D. Reitz

Abstract The high speed, transient cavitating flow distribution inside diesel injector nozzles with consideration of the opening and closing needle valve is calculated using a generalized equation of state (EOS) to describe the fluid density, a homogeneous equilibrium model (HEM) for phase change, and an arbitrary moving mesh to account for needle motion. The KIVA-3V code was modified for the g...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران - دانشکده مهندسی خودرو 1382

در این پایان نامه به مدل سازی عددی احتراق گاز طبیعی توسط کد kiva-3v پرداخته شده و یکی از روش های رایج در استفاده از گاز طبیعی در موتورهای دیزل که به صورت صددرصد گازسوز می باشد، مورد بحث و تحلیل قرار گرفته است. این تحلیل بر روی موتور om355 که در حالت پایه دیزل بوده و سپس با اعمال تغییراتی به موتور صددرصد گازسوز تبدیل شده، انجام گرفته است. در این پروژه در ابتدا به بررسی روش های مختلف استفاده از گ...

2007
Alfredo U. Luccio Aytekin Gel Ismail Celik

Simulation of the dynamics of beams in particle accelerators is an important tool in the design of new particle accelerators; detailed study and optimization of existing machines; Model based Accelerator Control. In recent years, with new structures and new methods of acceleration being considered, and with the growing importance of high current accelerators, namely machines in which non linear...

2009
Fuming XIAO Chengke LIU

A 3-D CFD model based on KIVA 3 code is developed with a “reduced” detailed chemical kinetics of 291 elementary reaction steps with 79 chemical species for diesel fuel combustion. The model was validated by the corresponding experimental results and employed to examine some important parameters which have significant effects on the engine performance for an IDI diesel engine with a swirl chambe...

2009
Peter Dittrich Frank Peter

The objective of this work is related to the problem of mixture preparation in a carburator of a small 1 cylinder 2 stroke engine. A enhanced KIVA3v code has been modified in order to get a geometrically simplified but relatively fast and reliable numerical diagnostics tool. Emphasis was placed on idle speed investigation with an unsteady outflow boundary condition. Mixture formation for closed...

2015
Claire F. Garandeau Ihno A. Lee Christina Salmivalli

a r t i c l e i n f o This study utilized data from the evaluation of the Finnish KiVa program in testing the prediction that school bullies' high perceived popularity would impede the success of anti-bullying interventions. Multiple-group structural equation modeling (SEM) analyses were conducted on a subsample of 911 third-, fourth-, and fifth-graders identified as perpetrators of bullying. T...

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