Purpose

The paper targets on providing new experimental data for validation of the well-established mathematical models within the framework of the lattice Boltzmann method (LBM), which are applied to problems of casting processes in complex mould cavities.

Design/methodology/approach

An experimental campaign aiming at the free-surface flow within a system of narrow channels is designed and executed under well-controlled laboratory conditions. An in-house lattice Boltzmann solver is implemented. Its algorithm is described in detail and its performance is tested thoroughly using both the newly recorded experimental data and well-known analytical benchmark tests.

Findings

The benchmark tests prove the ability of the implemented algorithm to provide a reliable solution when the surface tension effects become dominant. The convergence of the implemented method is assessed. The two new experimentally studied problems are resolved well by simulations using a coarse computational grid.

Originality/value

A detailed set of original experimental data for validation of computational schemes for simulations of free-surface gravity-driven flow within a system of narrow channels is presented.

中文翻译：

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铸型腔内自由表面流动数值模拟的实验验证

目的

本文旨在提供新的实验数据，以验证格子玻尔兹曼方法 (LBM) 框架内已建立的数学模型，这些模型应用于复杂型腔中的铸造工艺问题。

设计/方法/方法

在控制良好的实验室条件下，设计并执行了一项针对狭窄通道系统内自由表面流动的实验活动。实现了内部晶格玻尔兹曼求解器。详细描述了其算法，并使用新记录的实验数据和众所周知的分析基准测试对其性能进行了彻底测试。

发现

基准测试证明了所实现的算法在表面张力效应占主导地位时提供可靠解决方案的能力。评估实施方法的收敛性。这两个新的实验研究问题通过使用粗计算网格的模拟得到了很好的解决。

原创性/价值

提供了一组详细的原始实验数据，用于验证狭窄通道系统内自由表面重力驱动流动的模拟计算方案。