TI - Numerical investigation of non uniform heat transfer enhancement in parabolic trough solar collectors using dual modified twisted tape inserts AU - Afsharpanah, F. AU - Sheshpoli, A.Z. AU - Pakzad, K. AU - Mousavi Ajarostaghi, S.S. SO - Journal of Thermal Engineering 2021;7:133-147. DO - 10.18186/thermal.846584