Suppression of unsteady partial cavitation by a bionic jet

Y Gu, Z Yin, S Yu, C He, W Wang, J Zhang… - International Journal of …, 2023 - Elsevier
To suppress the cavitation phenomenon of the fluid machinery under high-velocity flow
conditions, we designed the shark gill slit jet structure based on the principle of bionics. The …

Fluidelastic instability of a fuel rod bundle subjected to combined axial flow and jet cross-flow

I Gad-el-Hak, N Mureithi, K Karazis - Journal of Fluids and Structures, 2023 - Elsevier
Nuclear fuel bundles are subjected to axial coolant flow in addition to jet cross-flow in a
specific design of pressurized water reactors (PWRs). The combined axial flow and jet cross …

Principal component analysis of vibration response of a rod bundle subjected to jet cross-flow

I Gad-el-Hak, N Mureithi, K Karazis… - Journal of Sound and …, 2023 - Elsevier
Flow injecting through loss of coolant accident (LOCA) holes in the baffle plates of some
pressurized water reactors (PWRs) can potentially induce vibrations of reactor fuel …

Fluidelastic instability of a rod bundle subjected to jet cross-flow

I Gad-el-Hak, N Mureithi, K Karazis - Journal of Fluids and Structures, 2023 - Elsevier
Jet flow emanating from loss of coolant accident (LOCA) holes in the baffle plates of some
pressurized water reactors (PWRs) was found responsible for flow-induced vibration in …

Jet mixing optimization using a bio-inspired evolution of hardware and control

T Shaqarin, Z Jiang, T Wang, C Hou… - Scientific Reports, 2024 - nature.com
Jet mixing is a critical factor in various engineering applications, influencing pollutant
dispersion, chemical processes, medical treatments, and combustion enhancement …

Modular gas-cooled reactor core optimal design and additive manufacturing performance based on SiC matrix dispersed with TRi-structural ISOtropic fuel

Q Lu, W Han, J Deng, H Li, Z Wei - Energy, 2024 - Elsevier
High-temperature gas-cooled reactors present significant technical competitiveness in
various fields, such as low-carbon electricity, thermal energy, and hydrogen supply. Silicon …

Mitigation of PWR fuel assembly vibrations using bio-inspired nozzles

I Gad-el-Hak, N Mureithi, K Karazis, B Painter - Scientific Reports, 2023 - nature.com
Jet flows injected in a transverse flow need rapid and effective mixing for various
applications ranging from medicine injection into bloodstreams to nuclear pressurized water …

Experimental analysis of biomimetic silencer to reduce exhaust noise in pneumatic devices

MH Ahn, J Kim, SR Lee, UD Lee, S Kim, D Shin, H Lee… - Applied Acoustics, 2023 - Elsevier
Pneumatic devices such as pneumatic artificial muscles (PAMs) generate excessive noise
during operation, thus inducing safety hazards and becoming a nuisance to nearby …

Vibrations of PWR fuel assembly under axial coolant flow and oblique impingement of jet cross-flow from LOCA holes

I Gad-el-Hak, N Mureithi, K Karazis - Nuclear Engineering and Design, 2024 - Elsevier
Nuclear fuel bundles are exposed to localized normal impinging jet cross-flow at certain
locations along the fuel rod span in a specific design of pressurized water reactors (PWRs) …

Mechanism and risk assessment of baffle-jetting-induced vibrations in fuel rods

I Gad-el-Hak, N Mureithi, K Karazis, B Painter - Nuclear Engineering and …, 2024 - Elsevier
As nuclear reactor cores approach the end of their lifespans, it is a crucial aspect to ensure
that the structural integrity of the reactor internals is not affected. The baffle-former bolts are …