نتایج جستجو برای: experimental equation

تعداد نتایج: 927431  

Prediction of available vapor pressure data in the case of compounds containing C-H-O led to derivations and recommendations of standard equations for this property. The accuracy of vapor pressure estimations is essential to use as a basis to calculate acentric factor, thermal and equilibrium properties. In this study, according to the previous work, an accurate equation to estimate vapor press...

Jalal Basiri Parsa Mohsen Edalat Ramin Bozorgmehri Boozarjomehry

A correlation based on the general form of cubic equations of state has been derived. This equation provides a convenient mathematical form of the Joule-Thomson coefficient in terms of the state variable V and T. The Joule-Thomson coefficient calculated by this correlation has been compared with experimental data. It has been shown that the Redilich-Kwang equation of state is a suitable equ...

Journal: :Journal of colloid and interface science 1998
Zheng Gu

A modified two-dimensional van der Waals equation model was proposed for the prediction of multicomponent gas-solid adsorption isotherms from corresponding single-component adsorption equilibrium data. The model was used to predict adsorption isotherms of CO-CO2 mixtures and CO2-N2 mixtures on Cu(I)-NaY zeolite. Experimental adsorption equilibrium data of the two systems were compared with resu...

2005
Lixin Sun Honggang Zhao Sergei B. Kiselev Clare McCabe

In previous work, we developed the crossover SAFT–VR equation of state (SAFT–VRX) for pure fluids by following the crossover approach proposed by Kiselev. The SAFT–VRX equation was shown to be very accurate in the prediction of PVT and phase behaviour for both nonassociating and associating fluids. In particular, simple expressions for the potential model parameters for the n-alkane homologous ...

2014
Dustin D. Keck David M. Bortz

Abstract. Size-structured population models provide a popular means to mathematically describe phenomena such as bacterial aggregation, schooling fish, and planetesimal evolution. For parameter estimation, generalized sensitivity functions (GSFs) provide a tool that quantifies the impact of data from specific regions of the experimental domain. These functions help identify the most relevant da...

1997
J. Nathan Kutz Brandon C. Collings Keren Bergman Sergio Tsuda Steven T. Cundiff Wayne H. Knox Michael Weinstein

A theoretical model is developed for the pulse dynamics in a fiber laser mode locked by a saturable Bragg reflector and operating in regimes beyond the scope of the master mode-locking equation. An asymptotically valid mode-locked evolution equation is derived, which includes a heuristic model for the saturable Bragg reflector dynamics. The model employed allows, for the first time to our knowl...

2014
Lauren Walker Wijitha Senadeera

An investigation of the drying of spherical food particles was performed, using peas as the model material. In the development of a mathematical model for drying curves, moisture diffusion was modelled using Fick’s second law for mass transfer. The resulting partial differential equation was solved using a forward-time central-space finite difference approximation, with the assumption of variab...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهرکرد - دانشکده علوم ریاضی 1391

دستگاه معادلات خطی زیر را در نظر بگیرید ‎egin{equation*}‎ ‎ax=b,qquad ain{mathbb{c}^{n imes{n}}},quad x,bin{mathbb{c}^{n}}‎ ‎end{equation*}‎ که در آن ‎$a$‎ یک ماتریس غیرهرمیتی با بعد بزرگ است. در این پایان${}$نامه یک الگوریتم هیبریدی را برای حل این دستگاه بررسی می${}$کنیم. این الگوریتم از روش ‎$ m{gmres}$‎ مبتنی بر زیرفضای کرایلوف برای تولید یک تقریب جواب استفاده می${}$کند و برای بهبود همگر...

Journal: :Journal of the Korea Society For Power System Engineering 2016

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