Rubber and plastics hoses for general-purpose industrial applications. Bore diameters and tolerances, and tolerances on length

1996 ◽  
Keyword(s):  
Industrial Applications ◽  
General Purpose

scholarly journals Experimental Study of Various Parameters during Speed Control of Three-phase Induction Motor Using GPIC and LabVIEW

2021 ◽  
Vol 5 (1) ◽  
pp. 51-62
Author(s):  
Adnan Ahmed ◽  
Abdul Majeed Shaikh ◽  
Muhammad Fawad Shaikh ◽  
Shoaib Ahmed Shaikh ◽  
Jahangir Badar Soomro
Keyword(s):  
Induction Motor ◽  
Induction Motors ◽  
Induction Machine ◽  
Speed Control ◽  
Industrial Applications ◽  
General Purpose ◽  
Three Phase ◽  
Field Programmable ◽  
Input Source ◽  
Open Control

Induction motors are widely used from home to industrial applications. Speed of induction motor plays important role, so to control the speed of induction motor various techniques are adopted and one of these techniques is V/F control, which is adopted in this paper. This technique helps to control the speed in open control system in RPM. Moreover, Control is designed in LabVIEW, it is quite helpful to develop the circuit graphically and code is automatically written in the background to run on Field Programmable Gate Array (FPGA). The aim of this research is to study the impacts on diverse parameters during speed control of three phase induction machine with manipulation of GPIC. Solar technology is used as input source to drive the General-Purpose Inverter Controller (GPIC). Apart of this, impacts of modulation index and carrier frequency influencing the active, reactive and apparent power, temperature and power quality and current overshoot is analysed. MATLAB/Simulink and LabVIEW tools are used for simulation and results along with GPIC, Induction motor and solar panel as hardware.

scholarly journals Operator-Based Linearization Approach for Modeling of Multiphase Flow with Buoyancy and Capillarity

SPE Journal ◽  
2021 ◽  
pp. 1-18
Author(s):  
Xiaocong Lyu ◽  
Mark Khait ◽  
Denis Voskov
Keyword(s):  
Multiphase Flow ◽  
Computational Cost ◽  
Industrial Applications ◽  
General Purpose ◽  
Uniform Mesh ◽  
Benchmark Tests ◽  
Gravity Forces ◽  
State Dependent ◽  
Highly Nonlinear ◽  
Unique Framework

Summary Numerical simulation of coupled multiphase multicomponent flow and transport in porous media is a crucial tool for understanding and forecasting of complex industrial applications related to the subsurface. The discretized governing equations are highly nonlinear and usually need to be solved with Newton’s method, which corresponds with high computational cost and complexity. With the presence of capillary and gravity forces, the nonlinearity of the problem is amplified even further, which usually leads to a higher numerical cost. A recently proposed operator-based linearization (OBL) approach effectively improves the performance of complex physical modeling by transforming the discretized nonlinear conservation equations into a quasilinear form according to state-dependent operators. These operators are approximated by means of a discrete representation on a uniform mesh in physical parameter space. Continuous representation is achieved through the multilinear interpolation. This approach provides a unique framework for the multifidelity representation of physics in general-purpose simulation. The applicability of the OBL approach was demonstrated for various energy subsurface applications with multiphase flow of mass and heat in the presence of buoyancy and diffusive forces. In this work, the OBL approach is extended for multiphase multicomponent systems with capillarity. Through the comparisons with a legacy commercial simulator using a set of benchmark tests, we demonstrate that the extended OBL scheme significantly improves the computational efficiency with the controlled accuracy of approximation and converges to the results of the conventional continuous approach with an increased resolution of parametrization.

scholarly journals Experimental Study of Various Parameters during Speed Control of Three-phase Induction Motor Using GPIC and LabVIEW

2021 ◽  
Vol 5 (1) ◽  
pp. 51-62
Author(s):  
Adnan Ahmed ◽  
Abdul Majeed Shaikh ◽  
Muhammad Fawad Shaikh ◽  
Shoaib Ahmed Shaikh ◽  
Jahangir Badar Soomro
Keyword(s):  
Induction Motor ◽  
Induction Motors ◽  
Induction Machine ◽  
Speed Control ◽  
Industrial Applications ◽  
General Purpose ◽  
Three Phase ◽  
Field Programmable ◽  
Input Source ◽  
Open Control

Induction motors are widely used from home to industrial applications. Speed of induction motor plays important role, so to control the speed of induction motor various techniques are adopted and one of these techniques is V/F control, which is adopted in this paper. This technique helps to control the speed in open control system in RPM. Moreover, Control is designed in LabVIEW, it is quite helpful to develop the circuit graphically and code is automatically written in the background to run on Field Programmable Gate Array (FPGA). The aim of this research is to study the impacts on diverse parameters during speed control of three phase induction machine with manipulation of GPIC. Solar technology is used as input source to drive the General-Purpose Inverter Controller (GPIC). Apart of this, impacts of modulation index and carrier frequency influencing the active, reactive and apparent power, temperature and power quality and current overshoot is analysed. MATLAB/Simulink and LabVIEW tools are used for simulation and results along with GPIC, Induction motor and solar panel as hardware.

An Unstructured-Mesh Methodology for Computation of Reacting Sprays in Industrial Combustors

1999 ◽  
Author(s):  
M. G. Giridharan ◽  
J. C. Sheu ◽  
S. A. Bayyuk ◽  
C. Presser
Keyword(s):  
Gas Phase ◽  
Computational Models ◽  
Unstructured Mesh ◽  
Quantitative Agreement ◽  
Industrial Applications ◽  
General Purpose ◽  
Solution Technique ◽  
Two Phase ◽  
Liquid Phases ◽  
Ongoing Work

Abstract This paper reports the progress made in developing a state-of-the-art, unstructured-mesh code for simulating reacting two-phase flows for general-purpose industrial applications. The code has been created by combining a finite-volume solver for computing flow, heat-transfer, and chemical reaction in the gas phase with a new object-oriented module specifically designed and developed to provide a framework for solving the system of equations governing the motion of spray droplets and their interactions with the gas phase. The gas phase equations are solved in an Eulerian frame while the droplet equations are solved in a Lagrangian frame. The paper presents the equations for droplet transport and behavior, describes the coupling models between the gas and liquid phases, and outlines the overall solution technique. Much of the paper is devoted to verification and validation of the computational models. The verification studies include comparison of computational results for particle motion under the influence of gravity and for solutions. The validation studies include comparison of predictions with published experimental data on behavior of evaporating and non-evaporating sprays. All comparisons show good qualitative and quantitative agreement. A 2-D axisymmetric simulation of methanol combustion in the N1ST reference spray combustor is also presented, and the results are compared with the NIST flow visualization data. Relevant ongoing work and future plans for incorporation of advanced spray models are briefly described.

scholarly journals A User Programmable General Purpose Microprocessor Control System

1980 ◽  
Author(s):  
D. E. Mann
Keyword(s):  
Real Time ◽  
Gas Turbine ◽  
Diesel Engines ◽  
Industrial Applications ◽  
General Purpose ◽  
Real Time System ◽  
Authority Control ◽  
Wide Range ◽  
Structure And Design ◽  
Hardware Structure

This paper describes the hardware structure and design of a general-purpose microprocessor based controller intended for the full authority control of gas turbine and diesel engines in ground based vehicle and industrial applications. Particular attention is paid to the digital processor and how it’s design was influenced by the user requirements of a general purpose, real-time system. The system is currently being manufactured in production form. An accompanying paper describes the supporting software and user program facilities (Ref 1). Such systems based on the use of microprocessors must not only provide general purpose hardware, but also software structured so that a wide range of control algorithms may be programmed and performed within strict limits of real-time. This paper describes the development of the Type C4E87 General Purpose Controller (REF Fig. 1) with particular reference to its hardware structure and design within a system intended primarily for application as a full authority control of gas turbine and diesel engines etc.

Determination and Qualification of Alternative Flange Assembly Procedures

2007 ◽  
Author(s):  
Alfred F. Waterland ◽  
James E. B. Frew ◽  
Chris Wyler ◽  
Stephanie Smith
Keyword(s):  
Case History ◽  
Industrial Applications ◽  
General Purpose ◽  
Physical Effort ◽  
Assembly Time ◽  
Ultimate Analysis ◽  
Star Pattern ◽  
Assembly Procedure

Alternative (non-traditional) flange assembly procedures offer the potential for reduced assembly time and physical effort in many industrial applications. While standards and procedures exist for the traditional, star pattern assembly procedure, there is currently only limited guidance for the selection and use of alternative assembly procedures. This paper summarizes the approach taken by the authors in determining potential assembly procedures, and the ultimate analysis and qualification undertaken to validate their use on a General Purpose Tank Car Hinged/Bolted Manway Connection. This case history study can serve as a guide to others in industry for selecting and qualifying alternative assembly procedures for their flanged equipment.

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