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steady single phase heterogeneous flows

Báo cáo nghiên cứu khoa học:

Báo cáo nghiên cứu khoa học: "NUMERICAL MODEL OF SINGLE PHASE TURBULENT FLOWS FOR CALCULATION OF PRESSURE DROP ALONG GAS PIPELINES " doc

Báo cáo khoa học

... gives the same result as practical data, but the result is acceptable when we combine all the one -phase flow equations of Weymouth, Panhandle A, Panhandle B and Clinedinst in calculating pressure...
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Single phase uninterruptible power supply based on z source inverter

Single phase uninterruptible power supply based on z source inverter

Tài liệu khác

... voltage of inductor L1 (or L2 ) over one switching period in steady- state operation is zero (uB − uC )T1 + uC T0 = (6) ZHOU et al.: SINGLE- PHASE UNINTERRUPTIBLE POWER SUPPLY BASED ON Z-SOURCE INVERTER ... pp 28–38, Spring 2007 [7] P K Jain, J R Espinoza, and H Jin, “Performance of a single- stage UPS system for single- phase trapezoidal-shaped AC-voltage supplies,” IEEE Trans Power Electron., vol ... voltage sag of the battery bank with high efficiency, low harmonics, fast response, ZHOU et al.: SINGLE- PHASE UNINTERRUPTIBLE POWER SUPPLY BASED ON Z-SOURCE INVERTER 3003 Fig 12 Comparison of efficiencies...
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Chapter 9  unbalanced operation and single phase induction machines

Chapter 9 unbalanced operation and single phase induction machines

Điện - Điện tử

... stator windings causes the winding currents to be 359 SINGLE- PHASE INDUCTION MACHINES out of phase when the phases are connected to the same single- phase source This provides a starting torque, and ... Open-Circuited Stator Phase For the purpose of analyzing an open-circuited stator phase, which is equivalent to single- phase operation, let us consider the stator circuits of a three -phase, wye-connected ... made it appear that the split -phase machine is the type of two -phase machine that is used in single- phase applications, this is not the case In fact, symmetrical two -phase induction machines are...
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Single phase fully controlled rectifier

Single phase fully controlled rectifier

Điện - Điện tử

... Lesson 10 Single Phase Fully Controlled Rectifier Version EE IIT, Kharagpur Operation and Analysis of single phase fully controlled converter Instructional ... values of different variables associated with a single phase fully controlled half wave converter • Explain the operating principle of a single phase fully controlled bridge converter • Identify ... lesson Version EE IIT, Kharagpur 10.2 Single phase fully controlled halfwave rectifier 10.2.1 Resistive load Fig.10 1(a) shows the circuit diagram of a single phase fully controlled halfwave rectifier...
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Single phase uncontrolled rectifier

Single phase uncontrolled rectifier

Thạc sĩ - Cao học

... 9.4.2 Single phase uncontrolled full bridge rectifier Version EE IIT, Kharagpur 21 The split supply full wave single phase rectifier offers as good performance as possible from a single phase ... sin2(β - θ) - sin2(ϕ - θ) ⎥ = 0.8564 Amps ⎦ 2π ⎣ RMS Diode current = 9.4 Single phase uncontrolled full wave rectifier Single phase uncontrolled half wave rectifiers suffer from poor output voltage ... Kharagpur 15 9.4.1 Split supply single phase uncontrolled full wave rectifier Version EE IIT, Kharagpur 16 Fig 9.6 shows the circuit diagram and waveforms of a single phase split supply, uncontrolled...
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Single Phase Motors pptx

Single Phase Motors pptx

Kĩ thuật Viễn thông

... Large number of turns • Aux has relative Small number of turns Φm Starting Torque in Single phase motor Split Phase Principle • To produce a starting torque a rotating magnetic field must be produced ... main windg produce a flux Φ m while the Aux wndg produces a flux Φa Since the angles are out of phase a resultant rotating field is created • A centrifugal switch disconnects the Aux wndg from...
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Single Phase AC Motors pot

Single Phase AC Motors pot

Kĩ thuật Viễn thông

... Operation    A phase motor self starts due to a rotating magnetic field in the windings If a single phase was applied to one winding, it would simply pulse ... inductive reactance causing the current to lag Split Phase Motor  A split phase motor has windings:   Run winding Start winding Split Phase Motor    The two windings cause the current to ...   Similar in effect to the split phase motor Capacitor causes current in start winding to lead voltage Start and Run windings are approximately 90° out of phase Capacitor Start Motor   High...
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Control of high performance single phase DC AC inverter

Control of high performance single phase DC AC inverter

Tổng hợp

... minimizes the high frequency harmonics in AC output voltage The inverter could provide a single- phase or a three -phase electrical power according to the load requirements Rotary UPS systems use motors ... inverter system Repetitive control has been applied to minimize the steady- state error and periodic distortions in single- phase voltage-source PWM inverters Toshimasa Haneyoshi etc [27] proposed ... analog pre-filters for feedback signals lead to different phase shifts for different harmonic components of the error signal However, the phase delay compensation can only be provided for only one...
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Implementation of a single phase electronic watt hour

Implementation of a single phase electronic watt hour

Tài liệu khác

... the block diagram that shows the high-level interface used for a single- phase energy meter application using the F6736 A single- phase two wire star connection to the mains is shown in this case ... of a Single- Phase Electronic Watt-Hour Meter Using the MSP430F6736 Copyright © 2012–2013, Texas Instruments Incorporated 13 Energy Meter Demo www.ti.com Figure 11 Top View of the Single Phase ... capacitor power supply for a single output voltage of 3.3 V directly from the mains voltage of 110 V and 220 V and 50 Hz and 60 Hz VRMS AC Implementation of a Single- Phase Electronic Watt-Hour...
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Báo cáo hóa học:

Báo cáo hóa học: " Research Article Fully Adaptive Clutter Suppression for Airborne Multichannel Phase Array Radar Using a Single A/D Converter" potx

Hóa học - Dầu khí

... T p This way we can maintain the transmission as a single train of 2N p + pulses for t = T p In this case the receiver simply changes the phase weights during the switching period and resumes ... any k regardless / / of the phase component of the term ρ(t0 , fk,rt )F(φk , θrt ) Furthermore, the search Doppler bin is associated with (1, ρ(t0 , ft ))T and if the phase component is ignored ... denoted in Figure as ∗ -, which is the nonadaptive FFT-based solution currently available for single A/D phase array radar with the EURASIP Journal on Advances in Signal Processing −10 −20 −20 −30...
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Báo cáo y học:

Báo cáo y học: "A statistical approach for detecting genomic aberrations in heterogeneous tumor samples from single nucleotide polymorphism genotyping data" pot

Báo cáo khoa học

... mixed normal-tumour genotypes AA/A, AB/A, AB/ B or BB/B for the single- copy deletion and AA/AAA, AB/AAA, AB/BBB or BB/BBB for the single- copy duplication Moreover, as the normal DNA content increases, ... copy numbers at the single locus level Bioinformatics 2008, 24:759-767 Bengtsson H, Neuvial P, Speed TP: TumorBoost: normalization of allelespecific tumor copy numbers from a single pair of tumor-normal ... article as: Yau et al.: A statistical approach for detecting genomic aberrations in heterogeneous tumor samples from single nucleotide polymorphism genotyping data Genome Biology 2010 11:R92 Submit...
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Báo cáo y học:

Báo cáo y học: "Phase delaying the human circadian clock with a single light pulse and moderate delay of the sleep/dark episode: no influence of iris color" potx

Báo cáo khoa học

... rhythm phaseepisodewith a single bright light pulse Circadian rhythm phase delays with a single bright light pulse and delayed sleep/dark episode The horizontal lines represent the median phase ... that subjects with darker irises had larger phase delays sode have reported phase delays of up to hours [9,12,27,28] Although a hour phase delay from a single day of light treatment is robust, such ... utilizing a single bright light pulse ending late at night with subjects waking at their habitual time (sleep episode truncated) have reported phase delays of about hour [24,25] Studies in which a single...
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Báo cáo y học:

Báo cáo y học: "IMP321 (sLAG-3), an immunopotentiator for T cell responses against a HBsAg antigen in healthy adults: a single blind randomised controlled phase I study" ppt

Báo cáo khoa học

... safety evaluation of IMP321, a GMP-grade sLAG-3 (hLAG-3Ig) protein, in a large randomised single blind phase I clinical trial The results of this proof-of-concept clinical study in healthy volunteers ... immunopotentiator for therapeutic vaccines Methods Study design and subject selection This single blind controlled phase I study was conducted at the Aster-Cephac S.A facility in Paris Ethical Review ... additional variability, the monitoring of the T cell response in the clinical trial was performed by a single operator who obtained 15 % and 14 % CV on CD4 and CD8 antigen-specific responses, respectively...
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Báo cáo y học:

Báo cáo y học: "inferring steady state single-cell gene expression distributions from analysis of mesoscopic samples" docx

Báo cáo khoa học

... biology has been mounting for quite some time, there has only been a single published report of the variability of gene expression in single cells, which did not provide an underlying statistical model ... Singer RH: Single- cell gene expression profiling Science 2002, 297:836-840 Ozbudak EM, Thattai M, Kurtser I, Grossman AD, van Oudenaarden A: Regulation of noise in the expression of a single gene ... mathematically coupled to predict the output levels of genes, mRNAs, and proteins produced inside a single cell A basic question that remains to be fully explored, however, is whether evidence of...
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Numerical and experimental investigation of single and two phase impinging jet heat transfer

Numerical and experimental investigation of single and two phase impinging jet heat transfer

Cao đẳng - Đại học

... numerical simulation, different models for single phase and two -phase heat transfer were developed to examine the effects of various parameters For the single phase simulation, the jet flow was in ... ……………………………………………… …………21 2.5 Two -phase IJHT: Experimental Investigation……………………………… ………23 2.6 Two -phase IJHT: Numerical Investigation………………………………… ………27 Chapter Fundamentals of Single and Two -phase IJHT…………………… ... 9.10 Visualizations of the single and two -phase heat transfer for the downward impingement …………………………………………………………………………….150 Fig 9.11 Visualizations of the single and two -phase heat transfer for...
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Lattice boltzmann study of near wall multi phase and multi component flows

Lattice boltzmann study of near wall multi phase and multi component flows

Cao đẳng - Đại học

... simulations of steady and unsteady flows 64 3.2.2 On the stability 65 3.2.3 On the convergence 66 3.3 Validation for single phase flows 68 3.3.1 Couette flows 69 3.3.2 Poiseuille flows 70 3.3.3 ... water-in-oil-in-water and oil-in-water-in-oil systems) Aside from single component two phase flows near critical points, the two phases or components are normally separated by an interface of thickness ... is the near-wall multi -phase and multi-component (MPMC) flows at the scales of micron or even nanometer level Due to the small scale, the surface to volume ratio in such flows is much larger than...
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An experimental study of pressure drop characteristics in vertical upward two phase and three phase flows

An experimental study of pressure drop characteristics in vertical upward two phase and three phase flows

Tổng hợp

... phase xiii – wall shear stress – wall shear rate Q – volume flow rate ̇ – multiphase mixture quality Subscript o – oil phase w – aqueous phase m – oil-water mixture L – liquid phase G – gas phase ... dispersed phase K - ratio of dispersed phase viscosity to continuous phase viscosity – maximum packing fraction of dispersed phase – oil holdup at inversion point µ - dynamic viscosity of oil phase ... Multiphase flow - general In general a fluid flow can be classified into two broad types based upon the number of immiscible phases that are considered into study: single phase flow and multiphase...
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AN1299 single shunt three phase current reconstruction algorithm for sensorless FOC of a PMSM

AN1299 single shunt three phase current reconstruction algorithm for sensorless FOC of a PMSM

Cao đẳng - Đại học

... application note is to be able to measure all three phases with a single- shunt resistor and a single differential amplifier A circuit showing a single- shunt resistor is shown in Figure FIGURE 4: ... VECTOR AREAS TO RECONSTRUCT THREE -PHASE CURRENTS USING A SINGLE- SHUNT RESISTOR V1 I V2 VI II V6 V T2 V3 III IV V5 T1 V4 In general, single- shunt reconstruction of three -phase currents is not possible ... ADVANTAGES AND DISADVANTAGES OF USING A SINGLE- SHUNT RESISTOR Advantages As previously mentioned, one of most important reasons for single- shunt three -phase reconstruction is cost reduction Which...
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