Experimental and Numerical Analysis of Chaotic Advection as an Efficient Approach to Maximize Homogeneous Laminar Mixing in a Batch Mixer

Shirmohammadi, Fatemeh; Tohidi, A.

doi:10.1590/0104-6632.20190364s20180559

Cited by 3 publications

(2 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The heat flows from high temperature to low temperature. The system monitoring is designed uses CodeVisionAVR [11,12], which controls the traffic of this device system. CodeVisionAVR acts as a program that instructs the system to work.…”

Section: Methodsmentioning

confidence: 99%

Design of Metal Heat Conductivity Measurement Using Probe Method

Hidayanti

Santoso

Baskara

2020

SPEKTRA

View full text Add to dashboard Cite

This study aims to design a tool that can measure the heat conductivity of metals by the Probe method. The design method was used by using a heat-flowed metal beam and the use of an LM35 temperature sensor to measure temperature changes on the probe. We are designing a measurement system based on conduction heat transfer. The metal used in the design is aluminum and carbon steel. For each metal tested, an LM35 temperature sensor is placed on the metal to find out that a temperature change has occurred. The conductivity value can be obtained from the temperature difference between the probe and the metal being tested, the temperature change of the probe, the temperature change of the metal being tested, and the heating time. This value is processed and calculated by the microcontroller into the value of heat conductivity. The measurement results show that the average heat conductivity value is 214.93 W/moC for aluminum and 53.81 W/moC for carbon steel.

show abstract

Section: Methodsmentioning

confidence: 99%

Design of Metal Heat Conductivity Measurement Using Probe Method

Hidayanti

Santoso

Baskara

2020

SPEKTRA

View full text Add to dashboard Cite

show abstract

“…Strain evolution, diffusion, separation, and aggregation are the controlling factors for reactions inflow [14,15]. The faster the agitation system rotates, the larger the isolated area is formed.…”

Section: Engineeringmentioning

confidence: 99%

Analysis of Position and Rotation Direction of Double Stirrer on Chaotic Advection Behavior

Susilo

Asrori

2021

Eureka: PE

View full text Add to dashboard Cite

Turbulent mixing can damage the material molecules because of turbulence. Whereas laminar mixing raises a problem when mixing is carried out on viscous liquids. The mixing mechanism using chaotic flow affects the mixing quality. The aim of the experiment was to determine the position and direction of the double stirrer chaotic mixer. The installation of a chaotic mixer uses a cylindrical tub and two different mixers consisting of a primary mixer (Pp) and a secondary mixer (Ps). Periodically rotate the container and stirrer. The center of the vessel and primary mixer are placed at the same coordinates. For ε=4 cm (Pp to Ps distance), there are three experiments, namely: vessel rotation and directional stirrer (P2S-a), vessel rotation and opposite stirrer (P2B-a), and vessel rotation, both primary and secondary stirrers are directional variations. (P2V-a). Eccentricity 7 cm, there are also three treatments as above: one direction (P2S-b), reverse direction (P2B-b), and variation of direction (P2V-b). The video camera recordings are processed digitally. Qualitative data show a pattern of behavior during mixing. Meanwhile, quantitative data is used to determine the level of mixing effectiveness. The results showed that the direction of rotation of the two cylinders had no effect on the effectiveness of chaotic mixing. Based on the number of initial droplets of dye, the treatment that experienced the fastest chaos was P2B-b, at n=2 and r=3.5303. The difference in the number of color droplets does not affect chaotic behavior. The highest mixing efficiency was generated by the lowest P2V-b mixing index value of 0.94. Simultaneously, the direction between the mixer and the container will provide maximum mixing efficiency. Isolated mixing areas (island) and areas of poor mixing occur because of one-way rotation and low eccentricity

show abstract

Chaotic advection in a twin cam mixer under various operating conditions

Zhan

Shen

et al. 2021

AIChE Journal

View full text Add to dashboard Cite

A twin cam mixer (TCM) system equipped with two triangular cams is built in this study.The effect of operating conditions on chaotic advection in TCM is investigated. Particle Image Velocimetry (PIV) is employed to investigate the flow characteristics under coand counter-rotating modes. Based on the good agreement between simulation and experimental results, chaotic advection under various operating conditions is investigated numerically. To evaluate the chaotic advection, time series Poincaré section, recording point density, and combined mixing index are proposed. The results show that counter-rotating mode is superior to co-rotating mode regarding chaotic advection.A more global chaotic advection can be obtained with the cams in TCM rotating at a higher average angular velocity, higher disturbance quantity, and lower disturbance frequency. The chaotic advection in TCM under different waveform protocols has no significant difference, but it is all better than that under constant protocol.

show abstract

Experimental and Numerical Analysis of Chaotic Advection as an Efficient Approach to Maximize Homogeneous Laminar Mixing in a Batch Mixer

Cited by 3 publications

References 28 publications

Design of Metal Heat Conductivity Measurement Using Probe Method

Design of Metal Heat Conductivity Measurement Using Probe Method

Analysis of Position and Rotation Direction of Double Stirrer on Chaotic Advection Behavior

Chaotic advection in a twin cam mixer under various operating conditions

Contact Info

Product

Resources

About