The flow modes of a vapor-drop mixture in a regasifier-heater of liquefied natural gas are numerically studied on the basis of the model that takes into account polydispersity, power, and thermal interaction of phases, processes of breakup, coalescence, evaporation of droplets, and condensation of steam. The dynamics of the carrier medium is described by the system of Navier-Stokes equations for a compressible gas taking into account the exchange of mass, momentum, and energy with a dispersed phase that includes several fractions differing in the size of droplets. Each fraction is described by a system of equations consisting of the continuity equation for the average density, the conservation equations for the momentum components, and the thermal energy conservation equation taking into account the interfacial exchange of mass, momentum, and energy with the carrier medium. Systems of equations of motion for the carrier medium and fractions of the dispersed phase are solved by the explicit McCormack method with the spatial operator splitting in directions and a scheme of nonlinear correction. At each time step, the main part of the computational algorithm is supplemented with models of breakup, coalescence, evaporation of droplets and vapor condensation followed by correction of the hydro- and thermodynamic parameters of the mixture. The calculation of the flow modes of the vapor-drop mixture in the channel of the regasifier-heater of liquefied natural gas is performed based on the described model.

中文翻译：

---

液化天然气再气化炉-加热器通道中多分散蒸气滴混合物的水动力和热力学

在考虑多分散性，相的功率和相的热相互作用，破裂过程，聚结，液滴蒸发的模型的基础上，对液化天然气再气化炉中蒸汽滴混合物的流动模式进行了数值研究。和蒸汽的冷凝。载体介质的动力学由可压缩气体的Navier-Stokes方程系统描述，其中考虑了质量，动量和能量与分散相的交换，该分散相包括液滴大小不同的几个部分。每个部分都由一个方程组系统描述，该方程组由平均密度的连续性方程，动量分量的守恒方程和考虑了质量，动量的界面交换的热能守恒方程组成。和能量与载体介质。载体介质和分散相的分数的运动方程组通过显式McCormack方法求解，其中空间算符在方向上分开并且采用非线性校正方案。在每个时间步长上，计算算法的主要部分都具有分解，合并，液滴蒸发和蒸汽冷凝的模型，然后校正了混合物的水力和热力学参数。基于所描述的模型来计算在液化天然气的再气化器-加热器的通道中的蒸汽滴混合物的流动模式。载体介质和分散相的分数的运动方程组通过显式McCormack方法求解，其中空间算符在方向上分开并且采用非线性校正方案。在每个时间步长上，计算算法的主要部分都具有分解，合并，液滴蒸发和蒸汽冷凝的模型，然后校正了混合物的水力和热力学参数。基于所描述的模型来计算在液化天然气的再气化器-加热器的通道中的蒸汽滴混合物的流动模式。载体介质和分散相的分数的运动方程组通过显式McCormack方法求解，其中空间算符在方向上分开并且采用非线性校正方案。在每个时间步长上，计算算法的主要部分都具有分解，合并，液滴蒸发和蒸汽冷凝的模型，然后校正了混合物的水力和热力学参数。基于所描述的模型来计算在液化天然气的再气化器-加热器的通道中的蒸汽滴混合物的流动模式。液滴的蒸发和蒸汽冷凝，然后校正混合物的水力和热力学参数。基于所描述的模型来计算在液化天然气的再气化器-加热器的通道中的蒸汽滴混合物的流动模式。液滴的蒸发和蒸汽冷凝，然后校正混合物的水力和热力学参数。基于所述模型，进行液化天然气的再气化器-加热器的通道中的蒸气滴混合物的流动模式的计算。