Experimental and Numerical Investigation of Heat Transfer Through Porcine Heart and Esophageal Tissue

2021 ◽  
Author(s):  
Karcher Morris ◽  
Shengfan Hu ◽  
Matthew Kohanfars ◽  
Frank E. Talke
Keyword(s):  
Heat Transfer ◽  
Atrial Fibrillation ◽  
Experimental Study ◽  
Temperature Sensor ◽  
Sensor Array ◽  
Thermal Damage ◽  
Porcine Heart ◽  
Esophageal Tissue ◽  
Close Proximity ◽  
Temperature Heat

Abstract Atrial fibrillation is a heart condition commonly treated by cardiac ablation procedures. Since the esophagus is positioned in close proximity to the heart, esophageal thermal damage can occur during ablation. In this study, we investigate the temperature rise on the inner esophagus surface using a 2D temperature sensor array. An experimental study was performed to measure temperature by the sensor array placed on inner porcine esophagus tissue as a constant temperature heat source is applied to the inner porcine atrial tissue. A numerical model was developed to complement the experimental study.

Theoretical and experimental study of capillary constraints on heat transfer in high-temperature heat pipes

1980 ◽  
Vol 38 (5) ◽  
pp. 469-473
Author(s):  
M. N. Ivanovskii ◽  
I. V. Yagodkin ◽  
V. P. Sorokin ◽  
L. M. Kuznetsova
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
High Temperature ◽  
Heat Pipes ◽  
Temperature Heat

Experimental study of viscosity characteristics of high-temperature heat transfer molten salts

2011 ◽  
Vol 54 (11) ◽  
pp. 3022-3026 ◽  
Author(s):  
YongChang Chen ◽  
YuTing Wu ◽  
Nan Ren ◽  
ChongFang Ma
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
High Temperature ◽  
Molten Salts ◽  
Temperature Heat

An Experimental Study of Heat Transfer During Forced Convection over a Rectangular Body

1980 ◽  
Vol 102 (1) ◽  
pp. 146-151 ◽  
Author(s):  
F. L. Test ◽  
R. C. Lessmann
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Experimental Investigation ◽  
Aspect Ratio ◽  
Surface Temperature ◽  
Stagnation Point ◽  
Temperature Heat ◽  
Transfer Behavior ◽  
Rectangular Body ◽  
Rectangular Model

An experimental investigation has been performed to determine the constant surface temperature heat transfer behavior on the upper surface of a rectangular model with a chord length of 20.3 cm (8 in.) and an aspect ratio of 6/1. Data were obtained for angles of attack from 0 to 50 deg and freestream velocities of 9.1, 15.2, and 21.3 m/s (30, 50 and 70 ft/s). Separation existed on a portion of the upper surface for angles between 0 and 20 deg with the flow being turbulent after reattachment. Above 30 deg the flow was always laminar with the stagnation point on the upper surface. The heat transfer results in the laminar case were strongly influenced by freestream disturbances.

scholarly journals Fluid dynamic analysis and experimental study of a temperature sensor array used in meteorological observation

2016 ◽  
Vol 65 (9) ◽  
pp. 094209
Author(s):  
Yang Jie ◽  
Liu Qing-Quan ◽  
Dai Wei ◽  
Mao Xiao-Li ◽  
Zhang Jia-Hong ◽  
...  
Keyword(s):  
Experimental Study ◽  
Dynamic Analysis ◽  
Temperature Sensor ◽  
Sensor Array ◽  
Fluid Dynamic ◽  
Meteorological Observation

Experimental Study on Heat Transfer Effect of Heat Pipe Grinding Wheel

2013 ◽  
Vol 770 ◽  
pp. 95-99
Author(s):  
Jia Jia Chen ◽  
Yu Can Fu ◽  
Qing Shan He ◽  
Chen Chen ◽  
Wei Zhang
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Heat Pipe ◽  
Thermal Damage ◽  
Transfer Effect ◽  
Working Fluid ◽  
Grinding Wheel ◽  
Rotating Speed ◽  
Enhancing Heat Transfer ◽  
Zone Temperature

High temperature in grinding can cause thermal damage to the workpiece. In order to reduce the grinding zone temperature, a method about enhancing heat transfer based on the rotation heat pipe technology is proposed. In this paper, the heat transfer effect of heat pipe grinding wheel (HPGW) under different conditions such as the rotating speed of grinding wheel, the kinds of working fluid and the film thickness are analyzed. The results show that the HPGW has great superiority of heat transfer under certain conditions.

Experimental study of thermohydraulic characteristics and irreversibility analysis of novel axial corrugated tube with spring tape inserts

2020 ◽  
Vol 92 (3) ◽  
pp. 30901
Author(s):  
Suvanjan Bhattacharyya ◽  
Debraj Sarkar ◽  
Ulavathi Shettar Mahabaleshwar ◽  
Manoj K. Soni ◽  
M. Mohanraj
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Thermal Performance ◽  
Working Fluid ◽  
The Novel ◽  
Heat Exchanger Tube ◽  
Heat Transfer Augmentation ◽  
Corrugated Tube ◽  
The Impact ◽  
Exchanger Tube

The current study experimentally investigates the heat transfer augmentation on the novel axial corrugated heat exchanger tube in which the spring tape is introduced. Air (Pr = 0.707) is used as a working fluid. In order to augment the thermohydraulic performance, a corrugated tube with inserts is offered. The experimental study is further extended by varying the important parameters like spring ratio (y = 1.5, 2.0, 2.5) and Reynolds number (Re = 10 000–52 000). The angular pitch between the two neighboring corrugations and the angle of the corrugation is kept constant through the experiments at β = 1200 and α = 600 respectively, while two different corrugations heights (h) are analyzed. While increasing the corrugation height and decreasing the spring ratio, the impact of the swirling effect improves the thermal performance of the system. The maximum thermal performance is obtained when the corrugation height is h = 0.2 and spring ratio y = 1.5. Eventually, correlations for predicting friction factor (f) and Nusselt number (Nu) are developed.

Heart rate in atrial fibrillation can be regulated by neurostimulation: results of an experimental study

2006 ◽  
Vol 54 (S 1) ◽  
Author(s):  
M Schmid ◽  
S Christiansen ◽  
G Langebartels ◽  
K Mischke ◽  
M Zarse ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Heart Rate ◽  
Experimental Study

Experimental Study of Heat Transfer from Impinging Jet with Upstream and Downstream Crossflow

2010 ◽  
Vol 41 (8) ◽  
pp. 889-900 ◽  
Author(s):  
Daniel Thibault ◽  
Matthieu Fenot ◽  
Gildas Lalizel ◽  
Eva Dorignac
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Impinging Jet
Sign in / Sign up

Export Citation Format

Share Document