Assessment of larvae killing pneumatic conveying system elbow: Screening the pressure drop and numerical simulation

In this study, the effect of the cyclone body height on the flow field within the specific cyclone and also on the performance parameters of the cyclone has been investigated. The five heights of the cyclone as various configurations were I = 600, II = 675, III = 750, IV = 825, and V = 900 mm. A pressure‐based solver was used and the turbulent Reynolds stress model was utilized to simulate the flow. Then, the Lagrangian discrete phase model was used to simulate the solid phase. As the height of the cyclone increases, the pressure drop decreases. Also, the best separation efficiency and the highest particle velocity value were achieved at a height of 750 mm. The maximum values of turbulence intensity, skin friction coefficient, and strain rate were obtained as negative components of cyclone performance at the cyclone body height of 900 mm. The height of 750 mm was recognized as the best height of the cyclone's body.Practical ApplicationsApplying numerical simulation in food processing is a novel method to minimize equipment construction and reach a high‐accuracy design. Computational fluid dynamics can provide an accurate and detailed flow analysis in the cyclone separators utilized in the flour processing plant. The dimensional analysis can help the researchers to achieve the optimum design and enhance the cyclone performance by reducing pressure drop and increasing separation efficiency. Also, the maintenance cost would be significantly reduced due to detecting the critical sections and strengthening them.

Section: Introductionmentioning

confidence: 99%

A numerical assessment to select the optimal geometry of a specific cyclone separator of wheat flour processing

Emami,

Rostampour,

Rezvanivand Fanaei

et al. 2024

“…The application of new methods in agriculture especially in the processing of agricultural‐related fields is increasing. Some of these new methods are numerical and lead to a deep approach and vision about assessing phenomena within the products (Fanaei et al, 2021; Mohammadzadeh et al, 2021; Naimi et al, 2019; Rezvanivand Fanayi & Nikbakht, 2015). On the other hand, some methods are used to have a better quality during a unit operation.…”

Section: Introductionmentioning

confidence: 99%

Developing ultrasound‐assisted infrared drying technology for bitter melon (Momordica charantia)

Akhoundzadeh Yamchi,

Hosainpour,

Hassanpour

et al. 2023

Self Cite

The design of specific drying equipment requires correct knowledge of kinetic and thermodynamic characteristics of agricultural products. The purpose of this research is to find a suitable mathematical model to describe the experimental drying process, obtain the activation energy to specify the thermodynamic properties and calculate the specificity energy consumption. Bitter melons were dried in an infrared dryer with different temperatures, ultrasonic pretreatment times, and diverse distances from infrared lamps to reach moisture 0.1 kgw.kgd−1. The Midilli's model, best model to describe the drying process of bitter melon was chosen. The effective diffusion coefficient of bitter melon increased from 1.14 × 10−8 to 3.60 × 10−8 m2.s−1 with increasing drying temperature and duration of ultrasound treatment and decreasing the distance from infrared lamps. Also, Specific energy consumption decreased from 161.96 to 303.57 kWh.kg−1 by increasing the temperature and duration of ultrasound pretreatment and reducing the distance of infrared lamps.Practical applicationsReducing moisture through mass and heat transfer is necessary to maintain the quality and shelf life and reduce the waste of medicinal plants and food materials. The controlled and scientific drying of bitter melon is of utmost importance due to the sensitivity of its effective constituents to the application of heat during the drying process. The utilization of mathematical modeling to conduct theoretical research offers a robust and expeditious means of evaluating the phenomena of mass and heat transfer in the context of natural drying conditions. In order to ensure quality control, a thorough investigation of the product's drying procedure and reducing energy consumption is imperative. The findings of this investigation are applicable to the enhancement of drying processes within the medicinal plant drying sector.

“…Also, several studies were carried out in other field of CFD‐linked agro‐industry fields such as separation, segregation, energy analysis, etc. (Fanaei et al, 2021; Huang & Kuo, 2017; Mohammadzadeh et al, 2021; Rezvanivand Fanaei et al, 2020; Zobeiri et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

A novel idea to increase the performance of a wheat flour cyclone separator: Controlling the reverse flow

Aghaei

Rostampour

Fanaei

et al. 2022

Self Cite

In this study, as a novelty, the reverse flow effect on a wheat flour cyclone performance was evaluated. A computational fluid dynamics (CFD) simulation was realized using a Reynolds stress turbulence model. Also, particle-air interactions were modeled applying a discrete phase model. Besides the experimental measurement, the numerical simulation was conducted in a main (without reverse flow) and six various reverse flow levels (I = 0.0385 m 3 s À1 , II = 0.0396 m 3 s À1 , III = 0.0484 m 3 s À1 , IV = 0.0583 m 3 s À1 , V = 0.0704 m 3 s À1 , and VI = 0.0836 m 3 s À1 ) by CFD. The validation between pressure drop in experimental data and numerical results revealed a good agreement with a maximum deviation of 8.2%. Cyclone performance including pressure drop and separation efficiency was assessed in the mentioned reverse flow levels. Moreover, velocity field, centrifugal force, and turbulence parameter were evaluated, comprehensively. It was found that the flour separation efficiency increased with enhancing the reverse flow level to IV = 0.0583 m 3 s À1 , but decreased with a sharp slope in the reverse levels of V = 0.0704 m 3 s À1 and VI = 0.0836 m 3 s À1 . Practical ApplicationsCyclone separators are widely used in various industries such as flour and cement.The various parameters of cyclones in a food processing unit effectively affect cyclone efficiency. Therefore, an innovative method for increasing cyclone performance is presented in this study. Computational fluid dynamics (CFD) is a powerful tool for simulation of the food processing phenomenon. Validation could be guaranteed by the usage of numerical results that are obtained from CFD simulations. The innovative methods can play a key role in decreasing energy usage by reducing the pressure drop and enhancing separation efficiency.