Performance Enhancement of Convective Heat Transfer in Double Pipe Heat Exchangers using Different Vortex Generators’ ConfigurationsMouhammad El Hassan, Abdullah Y. Al Rajeh, Nikolay Bukharin, Yara AlGhannam and Jawaher AlbakawiE3S Web Conf., 647 (2025) 02002DOI: https://doi.org/10.1051/e3sconf/202564702002