# Analysis of the Near-Wall Flow in a Turbine Cascade by Splat Visualization

## TL;DR

This paper investigates the impact of splat events on heat transfer in turbine cascades using direct numerical simulation and visualization, aiming to improve turbine design and efficiency.

## Contribution

It adapts a splat detection and visualization method to turbine flow simulation, providing new insights into splat formation and vortex interactions.

## Key findings

- Splat events significantly influence heat transfer in turbines.
- Visualization reveals the relationship between splats and vortex structures.
- Method offers potential for optimizing turbine cooling designs.

## Abstract

Turbines are essential components of jet planes and power plants. Therefore, their efficiency and service life are of central engineering interest. In the case of jet planes or thermal power plants, the heating of the turbines due to the hot gas flow is critical. Besides effective cooling, it is a major goal of engineers to minimize heat transfer between gas flow and turbine by design. Since it is known that splat events have a substantial impact on the heat transfer between flow and immersed surfaces, we adapt a splat detection and visualization method to a turbine cascade simulation in this case study. Because splat events are small phenomena, we use a direct numerical simulation resolving the turbulence in the flow as the base of our analysis. The outcome shows promising insights into splat formation and its relation to vortex structures. This may lead to better turbine design in the future.