Heat transfer and time-dependent flow of an impinging jet on a heated substrate mounted vertically downward or vertically upward

Key Points

• Heat transfer rates increase for downward impinging jets, enhancing thermal flux.
• The flow dynamics demonstrate notable differences with substrate orientation, affecting cooling efficiency.
• Assessment of heat transfer utilized computational models analyzing both vertical upward and downward configurations.
• Implications suggest optimization for industrial applications via controlled jet orientation for effective heat exchange.