RE：RECOMMENDATIONS AND ACHIEVEMENTS OF PROFESSOR HAOQING NI

September 19，1994

Member and Panel of the Review Committee

Beijing，China

Dear Member and Panel of the Review Committee：

I would like to take this opportunity to give my eamest and enthusiastic recommendation for Professor Haoqing Ni for his membership of academic of sciences.

I have known Professor Haoqing Ni for more than ten years since he undertook the research of fluid mechanics related to the water conservancy and hydroelectric power Recently，I had an opportunity to read the publications of the summary of work performed by Professor Ni and his colleagues，in the volume，issued by the Institute of Water Conservancy and Hydroelectric Power Research（IWHR）entitled，“Study of Turbulent Flow in Buoyance Recirculating Flow and Buoyant Environmental Flows.”

I believe Professor Ni is one of the pioneers in taking modern turbulence modeling and applying it to the environmental and hydroelectrical program particularly related to the effect of bouyancy.Professor Ni and his colleagues should be commended for undertaking such a difficult task in applying the turbulence model to the real world program in the electric power generation.This task was accomplished when China did not have adequate computer facilities in conducting numerical modeling of complex program.Profesor Ni was able to overcome the difficulties and still be persistant with his research in analyzing how fluid mechanics relate to the electric power generation，such as stratified flows in a open channel，buoyance circulating flow with sudden extension in a shallow water channel，with heated water discharging in a horizontal direction，the arrangement of intake and outlet systems of water supply in electric power station，a nalysis of heat transfer at the thermal power station，and recirculation of a power plant discharge in the river.

Professor Ni also made fundamental contribution in turbulence modeling.He contributed greatly to the modeling of turbulent flow in buoyant flow.He has studied extensively in the numerical simulation of algebra stress and low Reynolds number turbulence model in environmental flows.He also pioneered in applying the two fluid model of turbulence to thermal pollution problems.Also，he has contributed to the depth average turbulence model for the water environment and cooling ponds.

Professor Ni and his colleagues contributions have made the Institute of Water Conservancy and Hydroelectric Power Research as one of the Centers of buoyant and environmental flow in the world.I urge the review panel to recognize his contributions and his leadership in the field of computer and numerical simulations of fluid mechanic problems associated to water conservancy and hydroelectric powers.

Sincerely yours.

Ching-Jen Chen

Dean

CJC/as