Log in

Relevant bibliographies by topics / Jet Turbine / Journal articles

To see the other types of publications on this topic, follow the link: Jet Turbine.

Journal articles on the topic 'Jet Turbine'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 May 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Jet Turbine.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Gupta, Vishal, Ruchi Khare, and Vishnu Prasad. "Performance Evaluation of Pelton Turbine: A Review." Hydro Nepal: Journal of Water, Energy and Environment 13 (March 13, 2014): 28–35. http://dx.doi.org/10.3126/hn.v13i0.10042.

Full text

Abstract:

Earlier only experimental techniques were used to predict the performance of turbines. With advanced numerical techniques and increase in processing power of computers, Computational Fluid Dynamics (CFD) has emerged as an effective tool for the performance prediction of Pelton hydraulic turbine involving multi-fluid flow. Extensive work has been done for design optimization of reaction turbines using CFD. Now it is being extended for impulse turbines. The flow in reaction turbines involves only water as working medium, but in case of impulse turbines, water and air are working medium. The wate

APA, Harvard, Vancouver, ISO, and other styles

2

Zhang, Han, Hua Chen, Chao Ma, and Feng Guo. "INVESTIGATION OF CONJUGATED HEAT TRANSFER FOR A RADIAL TURBINE WITH IMPINGEMENT COOLING." Journal of Physics: Conference Series 2087, no. 1 (2021): 012037. http://dx.doi.org/10.1088/1742-6596/2087/1/012037.

Full text

Abstract:

Abstract Radial turbine is widely used in micro-turbines, turbochargers, small jet engines and expanders, and the pursue of high system efficiency has resulted in elevated turbine inlet temperatures for some of its applications, threatening its reliability. There are, however, few cooling studies on radial turbines. This paper studies the jet impingement cooling of a turbocharger radial turbine. A small amount of air (coolant), which could come from compressor discharge cooled by an intercooler, is injected through a few jet holes on the heat shield of the turbine onto the upper part of turbin

APA, Harvard, Vancouver, ISO, and other styles

3

Langston, Lee S. "Fahrenheit 3,600." Mechanical Engineering 129, no. 04 (2007): 34–37. http://dx.doi.org/10.1115/1.2007-apr-3.

Full text

Abstract:

This article illustrates capabilities of gas turbines to be able to work in extremely elevated temperatures. The turbine airfoils in the new F135 jet engine that powers the Joint Strike Fighter (JSF) Lightning II are capable of operating at these extreme temperatures. The F135 gas turbine is the first production jet engine in this new 3,600°F class, designed to withstand these highest, record-breaking turbine inlet temperatures. The JSF engine is just one product in the $3.7 billion military gas turbine market, which includes jet engine production for the world’s fighter aircraft military carg

APA, Harvard, Vancouver, ISO, and other styles

4

Ismail, Mohd Azlan, Al Khalid Othman, and Hushairi Zen. "An Economic Evaluation of Electromechanical Components for Microhydro in Borneo – Case Study." Asia Pacific Journal of Energy and Environment 2, no. 1 (2015): 17–24. http://dx.doi.org/10.18034/apjee.v2i1.220.

Full text

Abstract:

This paper presents an economic evaluation using Life Cycle Cost Analysis and Rate of Return to compare Pump as Turbine and Multi Jet Pelton Turbine as an electromechanical component in a microhydro project for Kampung Longkongungan, Sabah. The aim of this paper is to support microhydro project managers in rural areas to evaluate economic advantages between two type of turbines, taking into account relevant cost components, covering a wider perspective beyond capital cost. The analysis is set in view of 15 years product lifespan with discount rate set at 5% per annum. The goal of this study is

APA, Harvard, Vancouver, ISO, and other styles

5

Basar, Mohd Farriz. "Investigation on rotor jet interference in a hydraulic reaction turbine for low head low flow water conditions." Energy Harvesting and Systems 8, no. 1 (2021): 29–35. http://dx.doi.org/10.1515/ehs-2021-0019.

Full text

Abstract:

Abstract The focus of this paper is to investigate the issue of water jet interference, which is a common flaw in simple reaction turbines. When the turbine’s wall crosses the water jet coming from another nozzle, this is known as jet interference. The governing equations are also used to analyse the Z-Blade simple water reaction turbine for an ideal and practical example, based on the principles of mass-, impulses and energy conservation. Various evaluations of real and potential operating losses for low-head (3–5 m) and low-flow (3 L/s and below) water resources have been conducted. Accordin

APA, Harvard, Vancouver, ISO, and other styles

6

Langston, Lee S. "Gems of Turbine Efficiency." Mechanical Engineering 136, no. 09 (2014): 76–77. http://dx.doi.org/10.1115/9.2014-sep-9.

Full text

Abstract:

This article discusses the use of turbine single-crystal blades in gas turbines. Single-crystal turbine blades were first used in military engines on Pratt’s F100 engine, which powered the F16 and F15 fighter aircrafts. Their first commercial use was on P&WA’s JT9D-7R4 engine, which received FAA certification in 1982, powering Boeing’s 767 and the Airbus A310. In jet engines, single-crystal turbine airfoils have proven to have as much as nine times more relative life in terms of creep strength and thermal fatigue resistance and over three times more relative life for corrosion resistance,

APA, Harvard, Vancouver, ISO, and other styles

7

Hong, Liu, Huo Fupeng, and Chen Zuoyi. "Analysing and Optimizing the Aerodynamic Performance of Wind Turbine Blades Using Injected-Air Jets at Variable Frequency and Amplitude for Flow Control." Wind Engineering 29, no. 4 (2005): 331–39. http://dx.doi.org/10.1260/030952405774857860.

Full text

Abstract:

Optimum aerodynamic performance of a wind turbine blade demands that the angle of attack of the relative wind on the blade remains at its optimum value. For turbines operating at constant speed, a change in wind speed causes the angle of attack to change immediately and the aerodynamic performance to decrease. Even with variable speed rotors, intrinsic time delays and inertia have similar effects. Improving the efficiency of wind turbines under variable operating conditions is one of the most important areas of research in wind power technology. This paper presents findings of an experimental

APA, Harvard, Vancouver, ISO, and other styles

8

Shavdinova, M. D. "ENHANCEMENT OF STEAM-TURBINE CONDENSER STEAM-JET EJECTOR." Eurasian Physical Technical Journal 18, no. 4 (38) (2021): 52–58. http://dx.doi.org/10.31489/2021no4/52-58.

Full text

Abstract:

A three-stage steam-jet ejector EPO-3-200 with a working steam flow rate of 850 t / h is installed at the Combined Heat and Power Plant-2 of the city of Almaty on heating turbines. In this paper, the replacement of the existing three-stage steam-jet ejector with a two-stage steam-jet ejector is proposed and substantiated. As a result of the replacement, they obtained a saving of heat (steam) for their own needs for the production of electrical energy. It has been established that at a pressure in the turbine condenser significantly lower than 100 kPa, it is advisable to install a new two-stage

APA, Harvard, Vancouver, ISO, and other styles

9

Nedelcu, Dorian, Vasile Cojocaru, and Raoul-Cristian Avasiloaie. "Numerical Investigation of Nozzle Jet Flow in a Pelton Microturbine." Machines 9, no. 8 (2021): 158. http://dx.doi.org/10.3390/machines9080158.

Full text

Abstract:

The characterization of flow through Pelton hydro turbines allows the optimization of their operation and maximization of energy performance. The flow in the injector of Pelton turbines and in the free jet area (the area from the injector outlet surface to the runner bucket inlet surface) is influenced by several parameters: the geometry of injector components (nozzle and injector spear), the injector opening, and the turbine head. The parameters of the free jet flow (velocity distribution, pressure distribution, and jet spread) are reflected in the turbine efficiency. The research presented i

APA, Harvard, Vancouver, ISO, and other styles

10

Fukuda, Masafumi, Hiroshi Harada, Tadaharu Yokokawa, and Tomonori Kitashima. "Virtual Jet Engine System." Materials Science Forum 638-642 (January 2010): 2239–44. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.2239.

Full text

Abstract:

In 1999, we proposed the concept of a virtual gas turbine system which is a combination of turbine design and material design programs. Using this system, it has become possible to design a gas turbine engine and a combined cycle automatically, by inputting some basic information such as power output, turbine inlet temperature and material specifications. The derived outputs are turbine gas path dimensions, gas and cooling air flow rates, thermal efficiency, CO2 emissions, etc. We use the system to evaluate the potential improvement if a newly developed material is to be used in building the e

APA, Harvard, Vancouver, ISO, and other styles

11

Langston, Lee S. "Air Race." Mechanical Engineering 132, no. 05 (2010): 34–38. http://dx.doi.org/10.1115/1.2010-may-3.

Full text

Abstract:

This article presents an overview of the existence and use of gas turbines in the past, present, and future. The article uses the data provided by Forecast International of Newtown, Conn., which covers both aviation and nonaviation gas turbine markets. The gas turbine has proven to be an example of technological evolution, where improvements in efficiency and reliability continue to amass, 70 years after its invention. Advanced technology developed in military jet engines has often migrated to commercial jet engines and nonaviation gas turbines, and improved their performance. Gas turbine comb

APA, Harvard, Vancouver, ISO, and other styles

12

Qin, Ya Jie. "Numerical Investigation of Pneumatic Regulating on Low-Pressure Guide Vane." Applied Mechanics and Materials 733 (February 2015): 554–57. http://dx.doi.org/10.4028/www.scientific.net/amm.733.554.

Full text

Abstract:

In order to reduce the turbine flow, injecting an airstream into the mainstream of the low-pressure turbine from the casing. A CFD analysis has been carried out to study the impact of jet parameters (jet position, Angle, flow rate and velocity) to the turbine flow. The calculation results show that when the low-speed region caused by the jet flow locates at the throat the flow regulating effect is the most obvious. In additional, when the jet is against the main stream or with a big flow rate, the turbine flow regulation is better, but the loss efficiency of the turbine will be significantly i

APA, Harvard, Vancouver, ISO, and other styles

13

Barbarelli, Silvio, Gaetano Florio, and Nino Michele Scornaienchi. "Performance Analysis of a Low-Power Tangential Flow Turbine With Rotary Channel." Journal of Energy Resources Technology 127, no. 4 (2005): 272–79. http://dx.doi.org/10.1115/1.1944008.

Full text

Abstract:

A tangential flow prototype turbine with a rotating channel containing five optimized deflectors is presented. This atypical turbine configuration may be useful for application in the low ns high ds region of the Balje chart, where conventional turbines offer very poor performances. A 70kW maximum brake power, pressured-air test rig has been used for the analysis of operating characteristics, such as pressure, temperature, flow rate, and brake power. An electronic data acquisition system for automated measurement management was employed. An experimental campaign was carried out to identify the

APA, Harvard, Vancouver, ISO, and other styles

14

Santolin, A., G. Cavazzini, G. Ardizzon, and G. Pavesi. "Numerical investigation of the interaction between jet and bucket in a Pelton turbine." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 223, no. 6 (2009): 721–28. http://dx.doi.org/10.1243/09576509jpe824.

Full text

Abstract:

This article presents the numerical investigation of the interaction between the jet and the bucket in a Pelton turbine. Unsteady numerical analyses were carried out on a single jet Pelton turbine installed in the north of Italy. A two-phase inhomogeneous model was used. Two different jet configurations were analysed and compared. In the first configuration, the interaction between the runner and an axial-symmetric jet characterized by a given velocity jet profile was investigated, whereas in the second configuration the runner was coupled with the needle nozzle and the final part of the penst

APA, Harvard, Vancouver, ISO, and other styles

15

Langston, Lee S. "Bright Fortunes." Mechanical Engineering 143, no. 4 (2021): 46–51. http://dx.doi.org/10.1115/1.2021-jul3.

Full text

Abstract:

Abstract The gas turbine industry took some unprecedented hits in 2020. And some sectors, such as the jet engine market, may take some time to recover. But new technologies, such as hydrogen burning turbines, give reason for hope.

APA, Harvard, Vancouver, ISO, and other styles

16

Scalzo, A. J., R. L. Bannister, M. DeCorso, and G. S. Howard. "Evolution of Westinghouse Heavy-Duty Power Generation and Industrial Combustion Turbines." Journal of Engineering for Gas Turbines and Power 118, no. 2 (1996): 316–30. http://dx.doi.org/10.1115/1.2816593.

Full text

Abstract:

This paper reviews the evolution of heavy-duty power generation and industrial combustion turbines in the United States from a Westinghouse Electric Corporation perspective. Westinghouse combustion turbine genealogy began in March of 1943 when the first wholly American designed and manufactured jet engine went on test in Philadelphia, and continues today in Orlando, Florida, with the 230 MW, 501G combustion turbine. In this paper, advances in thermodynamics, materials, cooling, and unit size will be described. Many basic design features such as two-bearing rotor, cold-end drive, can-annular in

APA, Harvard, Vancouver, ISO, and other styles

17

Serrano, José Ramón, Francisco J. Arnau, Luis Miguel García-Cuevas, and Vishnu Samala. "A Robust Adiabatic Model for a Quasi-Steady Prediction of Far-Off Non-Measured Performance in Vaneless Twin-Entry or Dual-Volute Radial Turbines." Applied Sciences 10, no. 6 (2020): 1955. http://dx.doi.org/10.3390/app10061955.

Full text

Abstract:

The current investigation describes in detail a mass flow oriented model for extrapolation of reduced mass flow and adiabatic efficiency of double entry radial inflow turbines under any unequal and partial flow admission conditions. The model is based on a novel approach, which proposes assimilating double entry turbines to two variable geometry turbines (VGTs) using the mass flow ratio ( MFR ) between the two entries as the discriminating parameter. With such an innovative approach, the model can extrapolate performance parameters to non-measured MFR s, blade-to-jet speed ratios, and reduced

APA, Harvard, Vancouver, ISO, and other styles

18

Khurana, Sourabh, Dr Varun, and Anoop Kumar. "Experimental Investigation of Erosion and Performance of Turgo Impulse Turbine." Hydro Nepal: Journal of Water, Energy and Environment 12 (October 29, 2013): 76–79. http://dx.doi.org/10.3126/hn.v12i0.9038.

Full text

Abstract:

he present study has been carried out to investigate the effect of silt size, concentration, jet velocity, nozzle angle and operating hour on the erosive wear as well as on the performance of the Turgo impulse turbine in actual flow conditions. Samples of silt were collected from the Beas River (India) near the Pandoh dam. It has been found experimentally that silt parameters, nozzle angle and operating hour of the Turgo turbine increases the erosive wear rate in the turbine components causing efficiency loss in the Turgo impulse turbine and final breakdown of hydro turbines. Hydro Nepal; Jour

APA, Harvard, Vancouver, ISO, and other styles

19

Spodniak, Miroslav, Karol Semrád, and Katarína Draganová. "Turbine Blade Temperature Field Prediction Using the Numerical Methods." Applied Sciences 11, no. 6 (2021): 2870. http://dx.doi.org/10.3390/app11062870.

Full text

Abstract:

Nowadays, material science and stress characteristics are crucial in the field of jet engines. There are methods for fatigue life, stress, and temperature prediction; however, the conventional methods are ineffective and time-consuming. The article is devoted to the research in the field of application of the numerical methods in order to develop an innovative methodology for the temperature fields prediction based on the integration of the finite element methods and artificial neural networks, which leads to the creation of the novel methodology for the temperature field prediction. The propo

APA, Harvard, Vancouver, ISO, and other styles

20

Edwards, Tim. "Advancements in Gas Turbine Fuels From 1943 to 2005." Journal of Engineering for Gas Turbines and Power 129, no. 1 (2006): 13–20. http://dx.doi.org/10.1115/1.2364007.

Full text

Abstract:

The first provisional jet fuel specifications were published in 1943 in England (RDE/F/KER/210) and 1944 in the U.S. (AN-F-32a). Jet fuel has undergone many changes in subsequent years, with current specifications for JP-5 and JP-8 for the military in the U.S. and Jet A/Jet A-1 for commercial use worldwide. Jet fuel specifications are subject to constant tension between performance requirements and availability/cost considerations. In this paper we will discuss how jet fuels have evolved over the years from the first engines to current gas turbine engines. Jet fuels derived from nonpetroleum s

APA, Harvard, Vancouver, ISO, and other styles

21

CÎRCIU, Ionică, Vasile PRISACARIU, and Cristian-George CONSTANTINESCU. "GAS TURBINE MIXED JET FLOWS BASED ON THE COANDĂ EFFECT." Review of the Air Force Academy 13, no. 3 (2015): 27–32. http://dx.doi.org/10.19062/1842-9238.2015.13.3.4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Langston, Lee S. "Old and New." Mechanical Engineering 141, no. 06 (2019): 38–43. http://dx.doi.org/10.1115/1.2019-jun2.

Full text

Abstract:

As prime movers go, gas turbines are virtually brand new, compared to, say, wind and water turbines which have been around for millennia. But they have also reached a considerable level of maturity. Gas turbines now dominate both the world’s aircraft propulsion and a good portion of electric power generation. The fortunes of the industry are not uniform, however. The commercial jet engine market is robust and growing; the military jet engine, electric power, and other markets have been relatively flat or declining. But those are the sectors where the possibilities lie. They aren’t new, but the

APA, Harvard, Vancouver, ISO, and other styles

23

SAZONOV, Yu A., M. A. MOKHOV, Kh A. TUMANYAN, M. A. FRANKOV, and N. N. BALAKA. "PROTOTYPING MESH TURBINE WITH THE JET CONTROL SYSTEM." Periódico Tchê Química 17, no. 36 (2020): 1160–75. http://dx.doi.org/10.52571/ptq.v17.n36.2020.1176_periodico36_pgs_1161_1175.pdf.

Full text

Abstract:

The oil and gas market is unstable, which requires intensification of the exploratory research for working advanced and inexpensive pumping and compressor equipment out. Such equipment is crucial for more efficient hydrocarbon production. The ongoing research work is being undertaken to search and study new technical opportunities to develop advanced pumping and compressor equipment adapted to the complicated conditions of oil and gas production in solid abrasive particles in the flow of the pumped medium. New technology for gas compression has been evolved and further patented. The technology

APA, Harvard, Vancouver, ISO, and other styles

24

Pavlovich Kuznetsov, Yuri, Lev Anatolevich Zakharov, Sergey Nikolaevich Khrunkov, Artem Aleksandrovich Kraynov, and Aleksandr Evgenevich Zhukov. "Experimental Study of Pneumatic Two-Stage Small-Size Radial Turbine." International Journal of Engineering & Technology 7, no. 4.38 (2018): 305. http://dx.doi.org/10.14419/ijet.v7i4.38.24490.

Full text

Abstract:

This work is aimed at experimental study of the influence of design variables of the first jet reaction stage on the properties of pneumatic two-stage small-size radial turbine. Kinematic layout of the considered turbine is presented, operating processes are described, the final target is formulated to reveal the influence of certain geometrical parameters of the first jet reaction stage which determine overall turbine efficiency. Criterion of nozzle efficiency is determined, variable parameters of multifactorial experiment are selected; experimental facility and procedure of data processing a

APA, Harvard, Vancouver, ISO, and other styles

25

Bajracharya, Tri Ratna, Rajendra Shrestha, and Ashesh Babu Timilsina. "A Methodology for Modelling of Steady State Flow in Pelton Turbine Injectors." Journal of the Institute of Engineering 15, no. 2 (2019): 246–55. http://dx.doi.org/10.3126/jie.v15i2.27674.

Full text

Abstract:

Pelton turbine is a high head-impulse type turbine. The high-speed jet strikes the symmetrical semi ellipsoidal buckets, thus transferring the momentum within short period of time, impulse. The conversion of potential energy of water to kinetic energy in the form of jet is done by a nozzle with internally fitted spear or needle, the assembly in known as injector. The jet quality includes but is not limited to jet velocity, velocity distribution ‘velocity profile’, core location etc. In this study, the modeling of flow in Pelton turbine injector is done by commercial Computational Fluid Dynamic

APA, Harvard, Vancouver, ISO, and other styles

26

Gordon, J. L. "Hydraulic turbine efficiency." Canadian Journal of Civil Engineering 28, no. 2 (2001): 238–53. http://dx.doi.org/10.1139/l00-102.

Full text

Abstract:

A set of empirical equations has been developed which defines the peak efficiency and shape of the efficiency curve for hydraulic turbines as a function of the commissioning date for the unit, rated head, rated flow, runner speed, and runner throat or impulse turbine jet diameter. The equations are based on an analysis of peak efficiency data from 56 Francis, 33 axial-flow, and eight impulse runners dating from 1908 to the present, with runner diameters ranging from just under 0.6 m to almost 9.5 m. The metric specific speeds (nq) ranged from 5.3 to 294. The root mean square error of the calcu

APA, Harvard, Vancouver, ISO, and other styles

27

Langston, Lee S. "Breaking the Barriers." Mechanical Engineering 134, no. 05 (2012): 32–37. http://dx.doi.org/10.1115/1.2012-may-2.

Full text

Abstract:

This article explores the new developments in the field of gas turbines and the recent progress that has been made in the industry. The gas turbine industry has had its ups and downs over the past 20 years, but the production of engines for commercial aircraft has become the source for most of its growth of late. Pratt & Whitney’s recent introduction of its new geared turbofan engine is an example of the primacy of engine technology in aviation. Many advances in commercial aviation gas turbine technology are first developed under military contracts, since jet fighters push their engines to

APA, Harvard, Vancouver, ISO, and other styles

28

Stroita, Daniel Catalin, Adriana Sida Manea, and Anghel Cernescu. "Blade Polymeric Material Study of a Cross-Flow Water Turbine Runner." Materiale Plastice 56, no. 2 (2019): 366–69. http://dx.doi.org/10.37358/mp.19.2.5187.

Full text

Abstract:

Although Romania has a consistent hydro energetic potential, till now is valuated just approximate 30 percent of it. On the big rivers there are already installed high power hydro plants, but a lot of small and medium rivers are not valuated energetically. Installing a new high power hydro plant tends to affect the zone, being necessary a lot of changes in the environment. The Cross-Flow hydraulic turbines don�t need very complex hydro settlements, being very suitable for small and medium power hydro plants. Also a quite big potential in the use this type of hydraulic machines is the energy re

APA, Harvard, Vancouver, ISO, and other styles

29

Noorakmal Noorashid and Nurul Musfirah Mazlan. "Computational Study of Biofuels Effect on Pressure and Temperature Changes Across Two-spool High Bypass Turbofan Engine Components at Various Engine Rotational Speeds." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 92, no. 2 (2022): 138–56. http://dx.doi.org/10.37934/arfmts.92.2.138156.

Full text

Abstract:

This study evaluates the effect of biofuels on pressure and temperature changes across the CFM56-3 gas turbine engine components and the overall engine performance. The analysis was performed numerically using the Gas Turbine Simulation Programme (GSP11) at increasing high-pressure turbine (HPT) shaft speeds ranging from 8400 rpm to 10 400 rpm. The biofuels used in this work were Jatropha Bio-Synthetic Paraffinic Kerosene (JSPK) and Camelina Bio-synthetic Paraffinic Kerosene (CSPK). The fuels were tested as pure and as a blend with Jet-A. Results revealed linear increases in the temperature an

APA, Harvard, Vancouver, ISO, and other styles

30

Jovanović, Milan T., Vesna Maksimović, and Ivana Cvijović-Alagić. "Failure analysis of jet engine turbine blade." Metallurgical and Materials Engineering 22, no. 1 (2016): 31–38. http://dx.doi.org/10.30544/138.

Full text

Abstract:

Jet engine turbine blade cast by investment precision casting of Ni-base superalloy, which failed during exploatation, was the subject of investigation. Failure analysis was executed applying optical microscopy (OM), transmission electron microscopy (TEM) using replica technique, scaning electron microscopy (SEM) and stress rupture life tests. On the ground of obtained results it was concluded that the failure occurred as a result of structural changes caused by turbine blade overheating above the exploitation temperature.

APA, Harvard, Vancouver, ISO, and other styles

31

Li, Hao Ping, Feng Li, Zhi Fan Fang, and Yong Qing Chen. "Study on Turbine Blade Abrasion Mechanism and Abrasion Resistance Performance Testing Machine." Advanced Materials Research 621 (December 2012): 206–10. http://dx.doi.org/10.4028/www.scientific.net/amr.621.206.

Full text

Abstract:

This paper studied the flow indicators affecting abrasion through turbine component surface, analyzed the indicator data of major rivers, which provided design parameters and design basis of the abrasion test equipment; and studied abrasion test methods of turbine overflow surface, determined the rotating-jet mode abrasion test principle and design parameters of the rotating-jet abrasion testing machine

APA, Harvard, Vancouver, ISO, and other styles

32

Langston, Lee S. "Aspects of Gas Turbine Thermal Efficiency." Mechanical Engineering 142, no. 09 (2020): 54–55. http://dx.doi.org/10.1115/1.2020-sep4.

Full text

Abstract:

Abstract In the family of heat engines, the gas turbine is unique in that it is used to produce two different kinds of useful power. By converting combusted fuel heat into work, a gas turbine engine can produce external shaft power (e.g., to drive a connected electric generator) or jet power (e.g., as a jet engine, to produce thrust forces to propel an aircraft). This means that the gas turbine’s thermodynamic figure of merit, thermal efficiency, is multifaceted, and calls for a nuanced examination.

APA, Harvard, Vancouver, ISO, and other styles

33

Bozich, Daniel J., and Robert Wagenfeld. "Active gas turbine (jet) engine noise suppression." Journal of the Acoustical Society of America 98, no. 1 (1995): 27. http://dx.doi.org/10.1121/1.413725.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Laigna, K. Yu, and É. A. Potter. "Turbine jet airflow in open-ended workings." Soviet Mining Science 25, no. 3 (1989): 271–79. http://dx.doi.org/10.1007/bf02528488.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Kuznetsov, Yu P., V. L. Khimich, S. N. Khrunkov, A. B. Chuvakov, and R. A. Pogodin. "Research of the Radial Jet Turbine Characteristics." Russian Aeronautics 63, no. 4 (2020): 721–29. http://dx.doi.org/10.3103/s1068799820040212.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Al-Dabooni, Seaar Jawad, and Hussein Abdul Shaheed Al-Shawi. "Using Fuzzy Inference System in Gas Turbine to Overcome a High Exhaust Temperature Problem." Journal of Petroleum Research and Studies 12, no. 1(Suppl.) (2022): 225–42. http://dx.doi.org/10.52716/jprs.v12i1(suppl.).634.

Full text

Abstract:

The turbine units are at the forefront of equipment in the process of pumping crude oil and exporting it to the oil ports, where there are many types of turbines used in different sites of Iraqi stations whether pumping oil stations or electrical power production stations. One of the most important types of turbines is the gas turbine, which is frequently used in oil depots. One of the remarkable depots in Iraq is Zubair-1 / Basra that exports around 850,000 barrels per day (B/D). Therefore, Zubair-1 should continue pumping the crude oil 24/7, which has five gas turbines (three Rolls-Royce AVO

APA, Harvard, Vancouver, ISO, and other styles

37

Brown, Alan S. "Very Light and Fast." Mechanical Engineering 129, no. 01 (2007): 24–29. http://dx.doi.org/10.1115/1.2007-jan-1.

Full text

Abstract:

This article focuses on the developments in materials, production methods, and turbine designs that have spawned a new class of jets. Cessna’s Citation Mustang became the first very light jet to reach commercialization. According to market leaders, the development of computerized cockpits with simplified displays has also been huge. Composites also let engineers combine lots of parts—panels, framing, rivets—into a single part. The fewer parts, the easier and cheaper it is to assemble and the more reliable the finished airplane. Every aerospace company is looking for bolt-on components that sim

APA, Harvard, Vancouver, ISO, and other styles

38

Sivapragasam, M., S. Ramamurthy, M. D. Deshpande, and P. White. "An Air Jet Distortion Generation System." International Journal of Rotating Machinery 2014 (2014): 1–17. http://dx.doi.org/10.1155/2014/961452.

Full text

Abstract:

An air jet distortion generation system is developed to simulate the distorted flow field ahead of gas turbine engines in ground test facility. The flow field of a system of four jets arranged circumferentially and issuing into a confined counterflow was studied experimentally and numerically. The total pressure distortion parameters were evaluated at the Aerodynamic Interface Plane (AIP) for several values of mass flow ratios. Since the total pressure loss distribution at theAIPis characteristically “V” shaped, the number of jets was increased to obtain total pressure distributions as require

APA, Harvard, Vancouver, ISO, and other styles

39

Hossain, Mohammad A., Lucas Agricola, Ali Ameri, James W. Gregory, and Jeffrey P. Bons. "Sweeping jet impingement heat transfer on a simulated turbine vane leading edge." Journal of the Global Power and Propulsion Society 2 (September 19, 2018): 5A7OAZ. http://dx.doi.org/10.22261/jgpps.5a7oaz.

Full text

Abstract:

With the development of additive manufacturing technology, it is now possible to design complex and integrated internal cooling architecture for a gas turbine engine. In search of a spatially uniform heat transfer at the leading edge of a turbine nozzle guide vane, a sweeping jet impingement cooling strategy was proposed. Experiments were conducted in a low-speed wind tunnel to investigate sweeping jet impingement cooling in a faired cylinder leading edge model at an engine-relevant Biot number (Bi). Sweeping jets were generated with additively manufactured fluidic oscillator and steady jets w

APA, Harvard, Vancouver, ISO, and other styles

40

Bajracharya, Tri Ratna, Rajendra Shrestha, and Ashesh Babu Timilsina. "Numerical modelling of the sand particle flow in pelton turbine injector." Journal of Engineering Issues and Solutions 1, no. 1 (2021): 88–105. http://dx.doi.org/10.3126/joeis.v1i1.36821.

Full text

Abstract:

Pelton turbine is commonly employed high head impulse type turbine. Pelton turbine injector is an integrated part of the Pelton turbine machine which serves the purpose of converting entire pressure energy of water to kinetic energy and also regulates the water flowrate, with partial opening hence governing the power production. Severe erosion in Pelton turbine injector is reported from field setting research studies. Since the jet is atmospheric pressure jet, there is few chances of occurrence of cavitation hence it can be understood that impact of sand particles is the major cause of erosion

APA, Harvard, Vancouver, ISO, and other styles

41

Mohan Kumar, Palanisamy, M. Mohan Ram Surya, Srikanth Narasimalu, and Teik-Cheng Lim. "Experimental and numerical investigation of novel Savonius wind turbine." Wind Engineering 43, no. 3 (2018): 247–62. http://dx.doi.org/10.1177/0309524x18780392.

Full text

Abstract:

Savonius wind turbines have distinct advantages in terms of simplicity, low noise, and ease of manufacturing, yet they are not preferred for large-scale power generation due to their lower aerodynamic performance and high wind loads. This study is aimed at reducing the thrust load with retractable type telescopic blades. This novel telescopic Savonius turbine is tested in an open jet wind tunnel to assess the performance in terms of torque, power, and thrust on the rotor. The dynamic and static characteristics are obtained for both extended and retracted configuration after correcting the expe

APA, Harvard, Vancouver, ISO, and other styles

42

Longston, Lee. "Electrically Charged." Mechanical Engineering 124, no. 06 (2002): 50–52. http://dx.doi.org/10.1115/1.2002-jun-3.

Full text

Abstract:

This article focuses on gas turbines that were produced in 2001 spanning a wide range of capacities. As the engineer's most versatile energy converters, gas turbines producing thrust power continued in 2001 to propel most of the world's aircraft, both military and commercial. The largest commercial jet engines today can produce as much as 120,000 pounds thrust, or some 534,000 Newton. More natural gas pipeline capacity will be added to feed the surge in gas-driven electric power plants that have been corning online in the United States and other parts of the world. The gas turbine may come to

APA, Harvard, Vancouver, ISO, and other styles

43

Langston, Lee S. "Plowing New Ground." Mechanical Engineering 131, no. 05 (2009): 40–44. http://dx.doi.org/10.1115/1.2009-may-5.

Full text

Abstract:

This article presents an overview of the gas turbine industry. The annual value of production provides the vital signs for the industry. Forecast International in Newtown, Connecticut, uses its computer models and extensive database to monitor value of production for both the aviation and the non-aviation gas turbine market. The largest segment in the industry is aviation—jet engines and turboprop engines for commercial and military manned aircraft—with $21.4 billion in production. While aviation is the largest market for gas turbines, the non-aviation segment is the broadest. General Electric

APA, Harvard, Vancouver, ISO, and other styles

44

Catana, Razvan Marius, and Grigore Cican. "Study of Air Excess in Relation with Engine Parameters for a Generalized Reaction Based on JET-A Fuel." Applied Mechanics and Materials 772 (July 2015): 395–400. http://dx.doi.org/10.4028/www.scientific.net/amm.772.395.

Full text

Abstract:

In this paperwork we are studying the performance of a combustion process into a jet engine combustion chamber, more specifically the relations between excess of air, overall pressure ratio and inlet turbine temperature for a combustion reaction based on a jet A fuel. The study present a method of calculating the excess of air for a generalized combustion reaction based on Jet A fuel indicated by the general formula , for different temperatures of air, different temperatures of fuel and different inlet turbine temperatures. The result of this study is to achieve diagrams in which are presented

APA, Harvard, Vancouver, ISO, and other styles

45

Liu, Y. F., B. Lakshminarayana, and J. Burningham. "Flow Field in the Turbine Rotor Passage in an Automotive Torque Converter Based on the High Frequency Response Rotating Five-hole Probe Measurement Part I: Flow Field at the Design Condition (Speed Ratio 0.6)." International Journal of Rotating Machinery 7, no. 4 (2001): 253–69. http://dx.doi.org/10.1155/s1023621x01000227.

Full text

Abstract:

The relative flow field in an automotive torque converter turbine was measured at three locations inside the passage (turbine 1/4 chord, mid-chord, and 4/4 chord) using a highfrequency response rotating five-hole-probe. “Jet-Wake” flow structure was found in the turbine passage. Possible flow separation region was observed at the core/suction side at the turbine1/4chord and near the suction side at the turbine mid-chord. The mass averaged stagnation pressure drop is almost evenly distributed along the turbine flow path at the design condition(SR=0.6). The pressure drop due to centrifugal and C

APA, Harvard, Vancouver, ISO, and other styles

46

Langston, Lee S. "Fitting a Pitch." Mechanical Engineering 131, no. 12 (2009): 38–42. http://dx.doi.org/10.1115/1.2009-dec-4.

Full text

Abstract:

This article discusses gas turbine efficiency, which is an essential but often unappreciated aspect of turbomachine design pitch. To an engineer, the pitch of a turbo machinery blade is the angle at a representative blade cross-section between the blade chord line and the plane of the blade’s rotation. An axial flow gas turbine consists of many rows of rotating blades, interspersed with rows of stationary airfoils, called vanes or stators. The gas turbine compressor (whose first row of rotating blades in a jet engine may be a fan) draws in air, which after passing through a combustor to add en

APA, Harvard, Vancouver, ISO, and other styles

47

Pietrzyk, J. R., D. G. Bogard, and M. E. Crawford. "Hydrodynamic Measurements of Jets in Crossflow for Gas Turbine Film Cooling Applications." Journal of Turbomachinery 111, no. 2 (1989): 139–45. http://dx.doi.org/10.1115/1.3262248.

Full text

Abstract:

This paper presents the results of a detailed hydrodynamic study of a row of inclined jets issuing into a crossflow. Laser-Doppler anemometry was used to measure the vertical and streamwise components of velocity for three jet-to-mainstream velocity ratios: 0.25, 0.5, and 1.0. Mean velocity components and turbulent Reynolds normal and shear stress components were measured at locations in a vertical plane along the centerline of the jet from 1 diameter upstream to 30 diameters downstream of the jet. The results, which have application to film cooling, give a quantitative picture of the entire f

APA, Harvard, Vancouver, ISO, and other styles

48

Doel, D. L. "TEMPER—A Gas-Path Analysis Tool for Commercial Jet Engines." Journal of Engineering for Gas Turbines and Power 116, no. 1 (1994): 82–89. http://dx.doi.org/10.1115/1.2906813.

Full text

Abstract:

Almost from the inception of the gas turbine engine, airlines and engine manufacturers have sought an effective technique to determine the health of the gas-path components (fan, compressors, combustor, turbines) based on available gas-path measurements. The potential of such tools to save money by anticipating the need for overhaul and providing help in work scope definition is substantial, provided they produce reliable results. This paper describes a modern gas-path analysis tool (GE’s TEMPER program), discusses the benefits and problems experienced by current TEMPER users, and suggests pro

APA, Harvard, Vancouver, ISO, and other styles

49

Langston, Lee S. "Changing the Game." Mechanical Engineering 130, no. 05 (2008): 25–29. http://dx.doi.org/10.1115/1.2008-may-2.

Full text

Abstract:

This article reviews potentially radical advances in gas turbines that came in all shapes and sizes in 2007. Gas turbine production is now a $30 billion industry, one that has been dominated, except for a stretch in the late 1990s, by commercial and military aviation. In its 70-year history, the gas turbine has become one of society’s most important and versatile energy conversion, which is relatively inert. Fuel converted to power through a gas turbine is as kinetic a substance as you can find, and one that can create great wealth. In the $21.8 billion aviation market, nearly 80 percent is fo

APA, Harvard, Vancouver, ISO, and other styles

50

Kindracki, Jan. "Temperature Measurements in the Detonation Chamber Supplied by Air from Centrifugal Compressor and Gaseous Hydrogen." Transactions on Aerospace Research 2017, no. 3 (2017): 7–23. http://dx.doi.org/10.2478/tar-2017-0019.

Full text

Abstract:

Abstract In this paper, the experimental results of a detonation chamber fed by air from a centrifugal compressor are presented. The detonation chamber was equipped with many different sensors, mostly thermocouples, which were placed in 11 different positions. The distribution of temperature changes along the chamber and radial temperature profile at the outlet are provided. The results here confirm the existence of high mixture stratification. Such mixture stratifications and temperature profiles may be used as an additional chamber wall cooling method. The experiments performed, address key

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!