Convective Heat Transfer at Critical Conditions

将进行一系列计算机实验，以探索接近H2O系统临界点的热传递机理。许多研究现在都在使用过时的状态方程，其质量在近临界区域尤其令人怀疑；拟议中的实验要么证实它们的有效性，要么证明它们严重不足。临界点的作用可能比之前认为的要深刻得多；水热系统中的条件甚至可以通过非常简单的公式来预测，从而减少了大量的数值计算。以前的复杂情况可能是由于非线性流体性质区域的方程中对流项的误差放大而导致的数值不准确的结果。换句话说，这项工作可能会改进和简化用于描述重要温度-压力区域的成矿和地热系统的模型。

A series of computer experiments will be performed to explore heat transfer mechanisms close to the critical point of the H2O system. Many studies are now using dated equations of state whose quality is especially suspect in the near critical region; the proposed experiments will either confirm their utility or demonstrate that they are woefully inadequate. The role of the critical point may be far more profound than previously thought; conditions in hydrothermal systems may even be predictable by very simple formulations, thereby reducing enormous numerical computations to routing calculations. Previous complications may be a consequence of numerical inaccuracies caused by amplification of errors in the convection term in the equations in the region of nonlinear fluid properties. In other words, this work may result in improvement and simplification of models used to represent ore-forming and geothermal systems in an important temperature-pressure region.