The optimal design of the thrust vector control system solid rocket motors (SRMs) is discussed. injection a supersonic underexpanded gas jet into diverging part engine nozzle considered, and multiparameter optimization geometric shape parameters flow developed. turbulent viscous compressible in main simulated with Reynolds-averaged Navier–Stokes (RANS) equations shear stress transport (SST) tur...

Along with several other nuclear physics laboratories around the world, the NSCL has undertaken the challenge of stopping a radioactive ion beam in order to make low-energy beams for experiments that require nearly thermal beam energies (precision mass measurements, laser spectroscopy, etc.). As part of the LEBIT (Low Energy Beam and Ion Trapping) Project at the NSCL, a gas stopping station is ...

The flow channel design in a proton exchange membrane fuel cell is critical for transporting reactant gases and removing product water efficiently. Herein, we proposed performed comprehensive study of four designs: straight, wavy, 2D-Nozzle, the novel 3D-Nozzle. Using limiting current method, discovered that oxygen transport resistance 2D-Nozzle designs are similar confirming diffusive mechanis...

Shell, head, nozzle, dan penyangga bejana tekan berdasarkan hasil perhitungan manual banyak digunakan di pabrik petrokimia, energi (pembangkit listrik), minyak gas (pabrik gas), sektor industri sebagai utuh. Analisis ini bertujuan untuk memahami kode-kode yang dalam desain vertikal sehingga dapat dimanfaatkan lapangan. Tujuan, nilai estetika, lingkungan kerja semuanya harus dipertimbangkan saat...

Primary nozzle is one of the most important factors which has a large influence on performance thermo-compressors. Most studies carried out until now, have been performed single-nozzle In this paper, an actual industrial thermo-compressor considered and purpose to study effect increasing primary number thermo-compressor. For purpose, triple-nozzle simulated numerically its compared with Ideal g...

Background: Oral feeding problems are among the most common issues in preterm infants. Various methods and feeding support tools are used in this regard, such as cup feeding and feeding nozzle. The present study aimed to determine the preferred method between cup feeding and feeding nozzle to support oral feeding in premature neonates. Methods: This clinical trial was conducted on 70 preterm i...

\nG ABSTRACT An abrasive waterjet nozzle wear monitoring and compensating mechanism using the frequency domain.acoustic signals geneiated by the jet exiting the nozzle, as input, is prbposed. An artificial neural network which forms the critical iart of this system is developed using the _back-propagatlon algorithm. The trained network is capable of determining the nozzle diameter corresponding...

An experimental and computational study showed that a passive boundary layer control device in the form of a step incorporated just downstream of a nozzle throat can be used to provide good thrust recovery. The nozzle without the step produced an overexpansion of the supersonic °ow. The computational study was performed for a full-scale nozzle under actual engine exhaust and ambient atmospheric...

The comparisons of two typical fluidic thrust vectoring exhaust nozzles including two-dimensional(2-D) nozzle and axisymmetric nozzle on aerodynamic characteristics was presented by numerical simulation. The results show: the thrust vector angles increased with the increasing secondary flow but decreased with the nozzle pressure ratio (NPR) increasing. With the same secondary flow and NPR, the ...

This paper presents the analysis of a two phase flow ejector for the transcritical CO2 cycle. A detailed simulation model of a two phase flow ejector was developed. A controllable ejector expansion device was designed, constructed, and installed in a transcritical CO2 experimental air conditioning system. System-level experimental results were obtained at different operation conditions and vari...