Derivation of Van der Waals equation by molecular mean field theory 范德瓦尔斯方程的分子平均场理论推导
By way of the chemical thermodynamic state function and based on the Van Der Waals 'gas state equation and the relational expression of specific heat at constant pressure, the relational expression of specific heat of real gas at constant volume in the oxygen bomb is inferred. 采用化学热力学状态函数法,根据真实气体范德华状态方程式和气体恒压比热关系式,导出了氧弹内真实气体的恒容比热关系式。
In the present paper, we have calculated the liquid-liquid equilibrium data with quite satisfactory results, for six binary systems of organic aqueous solution by using van der Waals equation, modified by the theory of molecular aggregation and van Laar mixing rule. 本文应用由分子聚集理论改进的vanderwaals方程和vanLaar混合规则对六个有机物水溶液体系的液液平衡进行了计算,取得了满意的结果。
Piecewise Parabolic Method for Compressible Multi-fluid Flows with van der Waals Equation of State vanderwaals状态方程可压缩多流体流动的PPM方法
On the basis of molecular aggregation model of van der Waals fluid the equation of state ( vdW) for molecular aggregation is derived by using statistical thermodynamic method. 基于范德瓦耳斯流体的分子聚集模型,应用统计热力学方法导出分子聚集型状态方程。
Modifications of the Van der Waals& Type Equation of State Volume Translation and Multiparameter Eos vanderwaals型立方状态方程的改进&Ⅱ体积平移及多参数方程
The example shows that ideal gas equation has less precision when the temperature is lower. Currently Van der Waals equation is recommended to be the gas equation under low temperature. 实例计算显示,温度越低,理想气体状态方程的准确性越低,一般在低温下工程上选择范德瓦尔方程进行气体性质的计算。
A Study on Van der Waals 'Equation 范德瓦耳斯方程研究
General discussion on van der Waals gas-liquid state equation 范德瓦耳斯气液状态方程纵横谈
The major developments in modifications of attractive parameter for van der Waals type equation of state in recent years were presented. 介绍近年来在修正吸引参数,改进vanderwaals型立方状态方程方面的主要进展。
The formula of Joule-Thomson coefficient in the condition of low pressure is derived for Van der Waals gas according to the viral equation of state. 从实际气体的维里状态方程出发,导出了实际气体μJ-T的一般形式,并推导了低压条件下范德华气体的焦耳&汤姆逊系数。
Van der Waals equation with taking into acount long-range force between molecules 考虑分子间长程力的范德瓦尔斯方程
Also, the experimental data were compared with the results calculated according to the other three prediction methods, the ideal adsorbed solution model, the vacancy solution theory of adsorption using Flory-Huggins activity coefficient equation, the two-dimensional van der Waals equation. 还用另外三个吸附模型的计算和比较。它们是理想吸附溶液模型,Flory&Huggins活度系数方程的吸附空穴溶液模型及二维vanderwaals状态方程。
An Excess Free Energy Model from van der Waals Equation of State 基于vanderwaals状态方程的剩余自由能模型
Mixing Rules for van der Waals Type of Cubic Equation of State ⅱ Equation of State-Excess Gibbs Free Energy Model vanderwaals型立方状态方程中的混合规则Ⅱ状态方程过量吉布斯自由能模型
Improved van der Waals Equation for the Prediction of Binary Adsorption Equilibria 改进的vanderwaals方程推算双组分的吸附平衡
In a compressible fluid-mixture model based on volume fraction, a high-order piecewise parabolic method ( PPM) is employed to solve multi-fluid flows characterized by the van der Waals equation of state. A double shock approximation is used in the Riemann solver. 基于流体体积分数的混合型多流体数值模型,将piecewiseparabolicmethod(PPM)方法应用于可压缩多流体流动的数值模拟,采用双波近似求解多流体vanderwaals状态方程的Riemann问题。
With the experimental values of thermal pressure coefficients of liquids to modify the excluded volume in the original van der Waals equation, an augmented van der Waals compressibility factor applicable to high density fluids is obtained. 利用实验测得的液体的热压力系数,修正原始vanderwaals模型中的排斥体积,得到了一个适用于高密度流体的推广的vanderwaals压缩因子。
Volume translation is an effective approach for improving prediction of liquid density with the van der Waals type equation of state. 体积平移是改进vanderWals型立方状态方程,使之能精确预测液相密度的一种有效方法。
The Anderson-Prausnitz equation of state has been improved by modifying the attractive term of the generalized van der Waals canonical partition function. 通过修改普遍化vanderwaals正则配分函数的引力项,发展了一个修正的状态方程式.将表征分子间引力参数α修正为不仅依赖于温度而且与密度有关。
By using the experience of the equation of state in gas-liquid equilibria for reference, a modified two-dimensional van der Waals equation was proposed and applied to gas-solid adsorption equilibria. 借鉴热力学状态方程在气液平衡中的经验,修改了二维vanderwaals状态方程,并在气固吸附平衡中应用。
Research of the Additional Term in Van der Waals ′ s Equation 关于范德瓦尔斯方程修正项的新探索
An augmented van der Waals model of VLE of the pure compounds has been established by the molecular thermodynamic method, and an equation of calculating the enthalpy of vaporization at the normal boiling point is obtained from this model, which contains only a molecular size-dependent parameter. 用分子热力学方法建立了纯物质汽液平衡的推广vanderwaals模型,并据此得到了一个计算正常沸点下液体蒸发焓的方程.它只含有一个与分子大小有关的参数。
Through the comparison of the mole density-pressure curves of Van der Waals, Redlich-Kwong and ideal gas thermodynamics state equation, a practical equation for pressure increasing was established. 通过比较范德瓦耳斯非理想气体热力学方程、Redlich-Kwong状态方程、理想气体方程的摩尔数密度压力曲线和实际摩尔数密度压力状态,得到了100℃地层条件下实用的流体充注增压公式;