2D-PIV Measurements in a Novel Swirl Burner Under Isothermal Conditions

2018 ◽  
pp. 53-60
Author(s):  
Mourya Voleti ◽  
Naga Venkata Sai Aditya Burle ◽  
Raghu Jarpala ◽  
Rajesh Sadanandan
Keyword(s):  
Swirl Burner ◽  
Piv Measurements ◽  
Isothermal Conditions

PIV MEASUREMENTS OF DUCT FLOW WITH A DETACHED TURBULATOR ARRAY

2001 ◽  
Vol 8 (2-3) ◽  
pp. 11
Author(s):  
Tong-Miin Liou ◽  
Shun-Nan Liou ◽  
K. H. Chang
Keyword(s):  
Duct Flow ◽  
Piv Measurements

Flame stabilization mechanisms and shape transitions in a 3D printed, hydrogen enriched, methane/air low-swirl burner

2021 ◽  
Author(s):  
Qiang An ◽  
Sina Kheirkhah ◽  
Jeffrey Bergthorson ◽  
Sean Yun ◽  
Jeongjae Hwang ◽  
...  
Keyword(s):  
Flame Stabilization ◽  
Swirl Burner ◽  
3D Printed ◽  
Shape Transitions

scholarly journals Dependence of the Flue Gas Flow on the Setting of the Separation Baffle in the Flue Gas Tract

2021 ◽  
Vol 11 (7) ◽  
pp. 2961
Author(s):  
Nikola Čajová Kantová ◽  
Alexander Čaja ◽  
Marek Patsch ◽  
Michal Holubčík ◽  
Peter Ďurčanský
Keyword(s):  
Particulate Matter ◽  
Flue Gas ◽  
Gas Flow ◽  
Negative Impact ◽  
Combustion Process ◽  
Cfd Simulations ◽  
Piv Measurements ◽  
Computational Fluid Dynamics Cfd ◽  
Particle Imaging ◽  
Combustion Of Solid Fuels

With the combustion of solid fuels, emissions such as particulate matter are also formed, which have a negative impact on human health. Reducing their amount in the air can be achieved by optimizing the combustion process as well as the flue gas flow. This article aims to optimize the flue gas tract using separation baffles. This design can make it possible to capture particulate matter by using three baffles and prevent it from escaping into the air in the flue gas. The geometric parameters of the first baffle were changed twice more. The dependence of the flue gas flow on the baffles was first observed by computational fluid dynamics (CFD) simulations and subsequently verified by the particle imaging velocimetry (PIV) method. Based on the CFD results, the most effective is setting 1 with the same boundary conditions as those during experimental PIV measurements. Setting 2 can capture 1.8% less particles and setting 3 can capture 0.6% less particles than setting 1. Based on the stoichiometric calculations, it would be possible to capture up to 62.3% of the particles in setting 1. The velocities comparison obtained from CFD and PIV confirmed the supposed character of the turbulent flow with vortexes appearing in the flue gas tract, despite some inaccuracies.

scholarly journals Phase transformations of the duplex stainless steel UNS S31803 under non-isothermal conditions

2021 ◽  
Vol 11 ◽  
pp. 1847-1851
Author(s):  
Gabrielle Cristine Lemos Duarte Freitas ◽  
Gláucio Soares da Fonseca ◽  
Luciano Pessanha Moreira ◽  
Duílio Norberto Ferronatto Leite
Keyword(s):  
Stainless Steel ◽  
Phase Transformations ◽  
Duplex Stainless Steel ◽  
Isothermal Conditions

scholarly journals Reconstructing the time evolution of wall-bounded turbulent flows from non-time-resolved PIV measurements

2020 ◽  
Vol 5 (5) ◽  
Author(s):  
C. Vamsi Krishna ◽  
Mengying Wang ◽  
Maziar S. Hemati ◽  
Mitul Luhar
Keyword(s):  
Time Evolution ◽  
Turbulent Flows ◽  
Time Resolved ◽  
Piv Measurements

scholarly journals Pyrolysis and Oxidation of PAN in Dry Air. Thermoanalytical Methods

1970 ◽  
Vol 17 (1) ◽  
pp. 38-42
Author(s):  
Anna BIEDUNKIEWICZ ◽  
Pawel FIGIEL ◽  
Marta SABARA
Keyword(s):  
Temperature Increase ◽  
Heating Rates ◽  
Linear Change ◽  
Dry Air ◽  
Isothermal Conditions ◽  
Gaseous Products ◽  
Heterogeneous Processes ◽  
Temperature Ranges ◽  
Higher Temperature ◽  
Kinetics Of

The results of investigations on pyrolysis and oxidation of pure polyacrylonitrile (PAN) and its mixture with N,N-dimethylformamide (DMF) under non-isothermal conditions at linear change of samples temperature in time are presented. In each case process proceeded in different way. During pyrolysis of pure PAN the material containing mainly the product after PAN cyclization was obtained, while pyrolysis of PAN+DMF mixture gave the product after cyclization and stabilization. Under conditions of measurements, in both temperature ranges, series of gaseous products were formed.For the PAN-DMF system measurements at different samples heating rates were performed. The obtained results were in accordance with the kinetics of heterogeneous processes theory. The process rates in stages increased along with the temperature increase, and TG, DTG and HF function curves were shifted into higher temperature range. This means that the process of pyrolysis and oxidation of PAN in dry air can be carried out in a controlled way.http://dx.doi.org/10.5755/j01.ms.17.1.246

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