Author(s): Thankachan Susmitha; Kanakkassery Raju Sidharth; Nandhakumar Saichenthur; Kantharaj Murali

Linked Author(s): Kantharaj Murali

Keywords: Sigma (σ) transformation; z-star (z*) transformation

Abstract: In hydrodynamic studies, there are very abrupt changes in physical variables both spatially and temporally in a water column. For example, vertical velocity distribution, thermal and saline stratification, and so on. In this study, multiple mesh transformation techniques such as sigma (σ) and z-star (z*) transformations are used to determine which is best for achieving efficient results when simulating. This study aims to figure out which method can improve the accuracy of the results without using an excessive number of layers and validating the current velocity and tidal range in the domain with the measured values. The selected domain for the study is the Kandla region in Gulf of Kachchh (GoK). The study area is a region with the highest potential of tidal energy and has the presence of estuaries and creeks that are characterized by higher velocities and tidal ranges. The study includes the comparison of computational time and the accuracy of the results while using different mesh transformation techniques. A statistical evaluation to study the accuracy of the mesh transformation techniques along with the computation stability and time are discussed in this paper.

DOI: https://doi.org/10.1007/978-981-97-6009-1_37

Year: 2022