School of Mechanical Engineering, Purdue University, 585 Purdue Mall, West Lafayette, IN 47906, USA.
Sci Adv. 2023 Mar 15;9(11):eadg3007. doi: 10.1126/sciadv.adg3007. Epub 2023 Mar 17.
We present the method of direct van der Waals simulation (DVS) to study computationally flows with liquid-vapor phase transformations. Our approach is based on a discretization of the Navier-Stokes-Korteweg equations, which couple flow dynamics with van der Waals' nonequilibrium thermodynamic theory of phase transformations, and opens an opportunity for first-principles simulation of a wide range of boiling and cavitating flows. The proposed algorithm enables unprecedented simulations of the Navier-Stokes-Korteweg equations involving cavitating flows at strongly under-critical conditions and 𝒪(10) Reynolds number. The proposed technique provides a pathway for a fundamental understanding of phase-transforming flows with multiple applications in science, engineering, and medicine.
我们提出了直接范德华模拟（DVS）方法来计算具有液-气相变的流动。我们的方法基于对纳维-斯托克斯-科特韦尔方程的离散化，该方程将流动动力学与范德华非平衡相变热力学理论相结合，为广泛的沸腾和空化流动的第一性原理模拟开辟了机会。所提出的算法使得在强烈亚临界条件和 𝒪(10)雷诺数下对纳维-斯托克斯-科特韦尔方程的空化流动进行前所未有的模拟成为可能。所提出的技术为具有多种科学、工程和医学应用的相变流提供了一种基本理解的途径。
