@conference {198410,
	title = {Numerical Investigations of Heat Transfer enhancement in double pipe heat exchanger using twisted tape insert. },
	booktitle = {AIAA SciTech, paper_AIAA-2021-1923},
	year = {2021},
	month = {January 2021},
	author = {Essam E. Khalil and Ahmed ElHwary and Samir AbouHedima and Mohamed EL Shabrawy}
}
