Effects of Screw Speed on Screw Pressure and Temperature: A Case of Non-Newtonian Non-Isothermal Flow

Amos Maina; Fredrick Mwema; Abiodun Bayode; Lungile Nyanga

doi:10.3390/engproc2025084070

Effects of Screw Speed on Screw Pressure and Temperature: A Case of Non-Newtonian Non-Isothermal Flow

Amos Maina, Fredrick Mwema, Abiodun Bayode, Lungile Nyanga

Mechanical and Construction Engineering Department

Research output: Contribution to journal › Conference article › peer-review

1 Downloads (Pure)

Abstract

This study uses ANSYS Polyflow to analyze the relationship between speed, temperature, and pressure. A wheat flour’s viscosity, thermal conductivity, and heat capacity were found to be 12,000 cps, 0.375 W/m-K, and 2190 J/kg-K, respectively. The speed was increased from 5 to 100 RPM in five-step increments. The findings of pressure and temperature measurements were examined for statistical significance, as well as the link between change in screw speed and change in pressure and temperature. As the screw speed increased, so did the pressure and temperature, with a maximum of 41 bar and 372 K recorded at 100 RPM. Proper screw speed selection is critical for maintaining optimal pressure and temperature conditions in the extruder, which ensures great product quality and operating efficiency.

Original language	English
Article number	70
Number of pages	8
Journal	Engineering Proceedings
Volume	84
Issue number	1
DOIs	https://doi.org/10.3390/engproc2025084070
Publication status	Published - 20 Feb 2025
Event	The 8th Mechanical Engineering, Science and Technology International Conference - Perlis, Malaysia Duration: 11 Dec 2024 → 12 Dec 2024 https://mest.umam.edu.my/2024/content/8th-mechanical-engineering-science-and-technology-mest2024

Access to Document

10.3390/engproc2025084070Licence: CC BY

engproc-84-00070Final published version, 1.64 MBLicence: CC BY

Cite this

@article{6f3d3cd06042456eb486a9cdd0823cc5,

title = "Effects of Screw Speed on Screw Pressure and Temperature: A Case of Non-Newtonian Non-Isothermal Flow",

abstract = "This study uses ANSYS Polyflow to analyze the relationship between speed, temperature, and pressure. A wheat flour{\textquoteright}s viscosity, thermal conductivity, and heat capacity were found to be 12,000 cps, 0.375 W/m-K, and 2190 J/kg-K, respectively. The speed was increased from 5 to 100 RPM in five-step increments. The findings of pressure and temperature measurements were examined for statistical significance, as well as the link between change in screw speed and change in pressure and temperature. As the screw speed increased, so did the pressure and temperature, with a maximum of 41 bar and 372 K recorded at 100 RPM. Proper screw speed selection is critical for maintaining optimal pressure and temperature conditions in the extruder, which ensures great product quality and operating efficiency.",

author = "Amos Maina and Fredrick Mwema and Abiodun Bayode and Lungile Nyanga",

year = "2025",

month = feb,

day = "20",

doi = "10.3390/engproc2025084070",

language = "English",

volume = "84",

journal = "Engineering Proceedings",

issn = "2673-4591",

publisher = "MDPI AG",

number = "1",

note = "The 8th Mechanical Engineering, Science and Technology International Conference, MEST2024 ; Conference date: 11-12-2024 Through 12-12-2024",

url = "https://mest.umam.edu.my/2024/content/8th-mechanical-engineering-science-and-technology-mest2024",

}

TY - JOUR

T1 - Effects of Screw Speed on Screw Pressure and Temperature: A Case of Non-Newtonian Non-Isothermal Flow

AU - Maina, Amos

AU - Mwema, Fredrick

AU - Bayode, Abiodun

AU - Nyanga, Lungile

PY - 2025/2/20

Y1 - 2025/2/20

N2 - This study uses ANSYS Polyflow to analyze the relationship between speed, temperature, and pressure. A wheat flour’s viscosity, thermal conductivity, and heat capacity were found to be 12,000 cps, 0.375 W/m-K, and 2190 J/kg-K, respectively. The speed was increased from 5 to 100 RPM in five-step increments. The findings of pressure and temperature measurements were examined for statistical significance, as well as the link between change in screw speed and change in pressure and temperature. As the screw speed increased, so did the pressure and temperature, with a maximum of 41 bar and 372 K recorded at 100 RPM. Proper screw speed selection is critical for maintaining optimal pressure and temperature conditions in the extruder, which ensures great product quality and operating efficiency.

AB - This study uses ANSYS Polyflow to analyze the relationship between speed, temperature, and pressure. A wheat flour’s viscosity, thermal conductivity, and heat capacity were found to be 12,000 cps, 0.375 W/m-K, and 2190 J/kg-K, respectively. The speed was increased from 5 to 100 RPM in five-step increments. The findings of pressure and temperature measurements were examined for statistical significance, as well as the link between change in screw speed and change in pressure and temperature. As the screw speed increased, so did the pressure and temperature, with a maximum of 41 bar and 372 K recorded at 100 RPM. Proper screw speed selection is critical for maintaining optimal pressure and temperature conditions in the extruder, which ensures great product quality and operating efficiency.

U2 - 10.3390/engproc2025084070

DO - 10.3390/engproc2025084070

M3 - Conference article

SN - 2673-4591

VL - 84

JO - Engineering Proceedings

JF - Engineering Proceedings

IS - 1

M1 - 70

T2 - The 8th Mechanical Engineering, Science and Technology International Conference

Y2 - 11 December 2024 through 12 December 2024

ER -