Dynamic Response of a Tube of Heat Exchanger with an Axial Load

In a nuclear power plant, the tubes array component that constitutes a cooling water heat exchanger is often subjected to cold and hot fluid flow impact, which are affected by axial stress due to thermal strain cause by these cold and hot flow impact. So, the dynamic characteristics of this tube would be changed significantly by this flow impact and even lead to failure. The axial load caused by thermal strain, the cold and hot flow impact, also markedly changes the dynamic characteristics of the tube.