3 citations · 4 across the 3 of their papers we have counts for
8 papers
Arithmetic Averages of Viscosity Coefficient are Sufficient for Second-Order Finite-Volume Viscous Discretization on Unstructured Grids
Hiroaki Nishikawa, Boris Diskin
In this short note, we discuss the use of arithmetic averages for the evaluation of viscous coefficients such as temperature and velocity components at a face as required in a cell…
Improved Wall-Normal Derivative Formulae for Anisotropic Adaptive Simplex-Element Grids
Hiroaki Nishikawa
In this paper, we explore methods for computing wall-normal derivatives used for calculating wall skin friction and heat transfer over a solid wall in unstructured simplex-element…
Economically High-Order Unstructured-Grid Methods: Clarification and Efficient FSR Schemes
Hiroaki Nishikawa
In this paper, we clarify reconstruction-based discretization schemes for unstructured grids and discuss their economically high-order versions, which can achieve high-order accura…
Grid Quality Measures for Iterative Convergence
Hiroaki Nishikawa
In this paper, we discuss two grid-quality measures, F- and G-measures, in relation to iterative convergence of an implicit unstructured-grid Navier-Stokes solver. The F-measure is…
On Estimating Machine-Zero Residual
Hiroaki Nishikawa
In this paper, we propose two techniques to estimate the magnitude of a machine-zero residual for a given problem, which is the smallest possible residual that can be achieved when…
The QUICK Scheme is a Third-Order Finite-Volume Scheme with Point-Valued Numerical Solutions
Hiroaki Nishikawa
In this paper, we resolve the ever-present confusion over the QUICK scheme: it is a second-order scheme or a third-order scheme. The QUICK scheme, as proposed in the original refer…