EFFECT OF FLOW RATE AND ELECTRIC FIELD ON ELECTROSPRAY DIFFUSION FLAME OF ETHANOL AND BUTANOL

2018 ◽  
Vol 28 (2) ◽  
pp. 161-178 ◽  
Author(s):  
S. Jowkar ◽  
Mohammad Reza Morad ◽  
S. Ghorbani
Keyword(s):  
Electric Field ◽  
Flow Rate ◽  
Diffusion Flame

scholarly journals Effect of Flow Rate and Electric Field on Transition from Undeveloped Liquid Jet to Laminar Liquid Jet.

1992 ◽  
Vol 18 (1) ◽  
pp. 87-93
Author(s):  
Takashi Hibiki ◽  
Manabu Yamaguchi ◽  
Takashi Katayama
Keyword(s):  
Electric Field ◽  
Flow Rate ◽  
Liquid Jet

Effect of Contaminant Flow-rate and Applied Voltage on the Current Density and Electric Field of Polymer Tracking Test

2016 ◽  
Vol 6 (2) ◽  
pp. 819
Author(s):  
F. L. Muhamedin ◽  
M. A. M. Piah ◽  
N. A. Othman ◽  
Nasir Ahmed Algeelani
Keyword(s):  
Electric Field ◽  
Flow Rate ◽  
Current Density ◽  
Applied Voltage ◽  
Fem Simulation ◽  
Surface Discharge ◽  
Physical Parameters ◽  
Insulation Material ◽  
Material Degradation ◽  
Contaminant Flow

<p>Electrical failure due to surface discharge on the insulation material will cause material degradation and eventually lead to system failure. The flow of leakage current (LC) on the insulator surface under wet contamination is used to determine the material degradation level. According to IEC 60587 standard, LC exceeding 60 mA for more than two seconds is considered as failure. In this study, the  electric field and current density distributions on the linear low-density polyethylene (LLDPE) and natural rubber blend material have been analyzed using finite element method (FEM) analysis. The physical parameters used in FEM simulation were applied with voltage and contaminant flow rate, in accordance to contaminant conductivity. Tracking test condition according to IEC 60587 standard has been applied as proposed by the reference work in simulation using QuickField FEM software. The results show that the electric field and current density would become critical in higher applied voltage and contaminant flow rate. The highest average and highest maximum current density and electric field are found in both applied voltage of 6 kV and contaminant flow rate of 0.90 mlmin<sup>-1</sup>.</p>

A lottery draw machine-inspired movable air filter with high removal efficiency and low pressure drop at a high flow rate

2019 ◽  
Vol 7 (11) ◽  
pp. 6001-6011 ◽  
Author(s):  
Nara Han ◽  
Yo Seph Lee ◽  
Byung Kwon Kaang ◽  
Wooree Jang ◽  
Hye Young Koo ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Pressure Drop ◽  
Electric Field ◽  
Removal Efficiency ◽  
Flow Rate ◽  
Low Pressure ◽  
High Flow ◽  
High Electric Field ◽  
High Flow Rate ◽  
Air Filter

A lottery draw machine-inspired novel movable air filter (MAF) system is presented in which MAFs are vigorously moved or rotated to form a high electric field and capture particulate matter (PM) particles.

Study on FAIMS ion source control and optimization using over-electric field

2020 ◽  
Vol 34 (12) ◽  
pp. 2050127
Author(s):  
Lunchao Zhong ◽  
Tao Gong ◽  
Hui Ma ◽  
Wenyan Shi ◽  
Peirong Wang ◽  
...  
Keyword(s):  
Electric Field ◽  
Flow Rate ◽  
Clinical Medicine ◽  
Environmental Pollutants ◽  
Ion Source ◽  
Low Flow ◽  
Source Control ◽  
Toxic Substances ◽  
Long Distance ◽  
Core Technology

Ion source provides sample ions for FAIMS. The key technology is ionization method. Efficient ionization of analytes is the core technology for data acquisition in high quality FAIMS systems. In order to long-distance detect and analyze harmful and toxic substances such as explosives, drugs, chemical reagents and environmental pollutants in an open environment, without pretreatment, real-time and on-line, the ion source control and its technical device using excessive electric field were designed and developed. The disadvantages of high flow rate of APCI and low flow rate of ESI are integrated, based on the chemical analysis principle of FAIMS, an experimental platform of ionization technology based on excessive electric field is proposed and designed, which mainly includes: ion focusing system, flat-panel migration zone with focusing structure, sample integration, etc. The experimental results show that the ion source based on excessive electric field can be widely used in biochemical weapon warning, drug tablet detection, environmental monitoring, food and drug detection and clinical medicine, and the detection limit can reach 0.1 ppm.

The time-dependent electric current from a flame

1984 ◽  
Vol 393 (1805) ◽  
pp. 297-308 ◽  
Keyword(s):  
Differential Equation ◽  
Electric Field ◽  
Electric Current ◽  
Diffusion Flame ◽  
Time Dependent ◽  
Two Dimensional ◽  
Ionization Detector ◽  
Flame Ionization ◽  
Dependent Potential ◽  
Ionization Detectors

An earlier static treatment of the electric current from the diffusion flame in a flame ionization detector has been extended to include time-dependent currents. The nonlinear differential equation describing the electric field in the space outside the flame has been solved analytically for a class of problems in which a time-dependent potential difference is switched on after a static current has been established. Both one- and two-dimensional geometrical configurations are considered. The results could be useful in suggesting new experiments on flame ionization detectors.

Investigation of Ducted Inverse Nonpremixed Flame Using Dynamic Systems Approach

2016 ◽  
Author(s):  
Uddalok Sen ◽  
Tryambak Gangopadhyay ◽  
Chandrachur Bhattacharya ◽  
Arpan Misra ◽  
Suman Karmakar ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Flow Rate ◽  
Diffusion Flame ◽  
Equivalence Ratio ◽  
Systems Approach ◽  
Diffusion Flames ◽  
Duct Acoustics ◽  
Practical Applications ◽  
Inverse Diffusion ◽  
Inverse Diffusion Flame

Gas turbine combustion has a number of practical applications, including aviation engines, ocean vessels, and tanks. The various advantages of normal diffusion flames, such as increased flame stability and reduced susceptibility to dynamic instabilities, has made it the de facto industrial standard. However, high NOx emission and sooting from such flames is a major problem, particularly for heavier hydrocarbons fuels. In that regard, the inverse diffusion flame offers a feasible alternative; but the dynamic response of such a flame, particularly in ducted conditions — where the unsteady heat release interacts with the duct acoustics — is relatively less researched. In the present work, an experimental investigation of a laboratory-scale inverse diffusion flame has been carried out. The inverse diffusion flame is found in applications like rocket motors, gas turbine combustors, and furnaces. In the present study, inverse diffusion flame from a coaxial burner inside a quartz tube was studied. The position of the duct with respect to the flame was kept fixed, while the global equivalence ratio was varied by keeping the air flow rate constant and changing the fuel flow rate. Various tools of nonlinear dynamics such as phase space reconstruction and recurrence quantification have also been used for dynamic characterization of such flames. The results show that the dynamics of the flame strongly depends on the global equivalence ratio.

scholarly journals Investigation of the effect of DC electric field on a small ethanol diffusion flame

Fuel ◽  
2017 ◽  
Vol 188 ◽  
pp. 621-627 ◽  
Author(s):  
Yanlai Luo ◽  
Yunhua Gan ◽  
Xi Jiang
Keyword(s):  
Electric Field ◽  
Diffusion Flame ◽  
Dc Electric Field
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