Results 1 to 10 of about 845 (133)

Design and numerical investigation to visualize the fluid flow and thermal characteristics of non-axisymmetric convergent nozzle

Engineering Science and Technology, an International Journal, 2019
In this paper, numerical simulations are conducted to visualize the fluid flow and thermal characteristics of a non-axisymmetric convergent nozzle. The novel design methodology is based on curve-fitting approach.
Manoj Kumar, R K Sahoo, S K Behera
exaly   +3 more sources

Spheres, tears, and spears: Regulating the perimeter and circularity of millimeter-sized alginate hydrogel beads. [PDF]

AIChE J
Abstract Generating hydrogel beads pertains to many engineering applications. We examined two alginate‐based fluids at three concentrations of alginate, cAG. We used the “Map of Misery” to determine which material property (viscosity, elasticity, and inertia) drives droplet formation. Next, we measured the perimeter and circularity of hydrogel beads as
Harris CG, Bandettini KD, Gedde HK, Semprini L, Fogg KC, Rochefort WE.   +5 more
europepmc   +2 more sources

Exploiting nozzle geometry to predict resolution in extrusion-based bioprinting: mathematical modelling of a power-law fluid [PDF]

Royal Society Open Science
Extrusion-based additive manufacturing (AM) is a popular technique used in the fabrication of three-dimensional constructs. Owing to the nonlinear manner in which process parameters affect resolution and printability, the optimal combination remains ...
Amy Victoria Tansell, Nasim Mahmoodi, Joseph Patrick Crolla, Rosemary Julia Dyson, Galane Jingxi Luo, Lauren Elizabeth Jane Thomas-Seale   +5 more
doaj   +2 more sources

Dancing Electrohydrodynamic Tip Streaming Modulated by Faraday Instability. [PDF]

Adv Sci (Weinh)
A novel dancing electrospray phenomenon is reported characterized by high‐frequency, robust, and multi‐directional alternating ejection modes. This phenomenon arises from the electrohydrodynamic (EHD) tip streaming at the crests of Faraday waves excited on the liquid meniscus, and it offers significant advantages in high‐throughput and multi‐path ...
Liu Q, Ji B, Zou Y, Zhang D, Sun H, Fu Q, Yang L.   +6 more
europepmc   +2 more sources

Wide-Flow Aerosol Jet Printing Enables High-Throughput, Ultra-Low Aspect Ratio Patterning. [PDF]

Adv Sci (Weinh)
Wide‐flow aerosol jet printing (WF‐AJP) employs an anisotropic nozzle design to generate planar aerosol jets, enabling millimeter‐scale deposition of highly uniform, ultra‐low aspect ratio (<1:6000) films with substantially reduced anisotropy in functional performance.
Niu Z, Yi H, Jin Y, Yue Y, Chen S, Dong Z, An J, Chua CK, Cao H.   +8 more
europepmc   +2 more sources

Numerical simulation on the pressure distribution of hydraulic jet perforation tunnel in natural gas hydrate reservoirs [PDF]

Scientific Reports
Hydrajet fracturing could be a promising technique for increasing hydrate production; however, the pressure distribution law inside the perforation tunnel must first be investigated.
Jiawei Zhou, Kaixiang Shen, Wenwei Xie, Yanjiang Yu, Yingsheng Wang, Bo Ning, Kewei Zhang, Haoyu Yu   +7 more
doaj   +2 more sources

Performance of Two Types of High Speed, High Efficiency ‎Axisymmetric Intakes [PDF]

Journal of Applied and Computational Mechanics, 2021
Performance of two axisymmetric air intakes are compared at conditions suitable for Mach number range from 2 to 8. First is the Busemann intake and second is the reversed isentropic nozzle. The isentropic nozzle is built by the method of characteristics.
Vladislav Galkin, Vasily Fomin, Sannu Mölder, Dmitry Vnuchkov, Valery Zvegintsev   +4 more
doaj   +1 more source

Altitude-compensating axisymmetric supersonic nozzle design and flow analysis [PDF]

INCAS Bulletin, 2023
Altitude-adapted nozzles are designed to facilitate flow adaptation during rocket ascent in the atmosphere, without requiring mechanical activation. As a consequence, the performance of the nozzle is significantly improved.
Sidali HAIF, Hakim KBAB, Amina BENKHEDDA
doaj   +1 more source

Study on the Influence of Nozzle Ablation on the Performance of the Solid Rocket Motor

Aerospace, 2023
As a key component of the solid rocket motor, nozzle ablation is very important to the performance of the motor. In order to study the influence of the law of nozzle ablation on motor performance, a two-dimensional axisymmetric model of a ground state ...
Weiqiang Huang, Chunguang Wang, Kaining Zhang, Zhihong Wang, Weiping Tian   +4 more
doaj   +1 more source

Finite Element Analysis of Nozzle Erosion Caused by Abrasive Particles of Ultra High Pressure Water Jet [PDF]

Cailiao Baohu, 2022
In order to analyze and solve the erosion of the inside of nozzle caused by high - speed abrasive particles for improving the nozzle’s erosion and wear resistances and optimizing the structure design of ultra - high pressure jet nozzle, transient two ...
HUO Hongbo, LI Zhong, ZHANG Ming, ZHANG Binqi, HE Shiming, ZHANG Zhi
doaj   +1 more source