University of Florida

ABE 6615
Advanced Heat and Mass Transfer in BIological Systems

Semester Taught - Spring (even years)

Catalog Description

Credits: 3

Analytical and numerical technique solutions to problems of heat and mass transfer in biological systems. Emphasis on nonhomogeneous, irregularly-shaoed products with respiration and transpiration.

Pre-requisites/Co-requisites

CGS 3422 and AGE 3612C

Instructor

William Pelletier
Room 101 Rogers Hall
Phone: 392-1864 x101
E-mail: willpell@ufl.edu

Material/Supply Fees

None.

Class Materials Required

Reference Materials

  • Luikov, A.V. Analytical Heat Diffusion Theory. Academic Press,
    N.Y. 1968

    Segerlind, L.J. Applied Finite Element Analysis. John Wiley and
    Sons. 1976

    Various technical papers

    ANSYS Finite Elements Software Package

Course Outline

  • Review of analytical heat diffusion theory
    • Fundamental Fourrier heat conduction law
    • differential heat conduction equation
    • solutions for semi-infinite body, plate, sphere, and cylinder
  • Mass transfer
    • Fick's law
    • the Lewis relation
    • simultaneous heat and mass transfer; enthalpy potential
    • transpiration of fruits and vegetables
    • effects of: vapor pressure, deficit air movement, respiration, size, shape ,surface structure
    • mathematical modeling
    • procedures for measuring transpiration rates
  • Finite difference methods
    • simulation of transient heat flow in non-homogeneous biological materials of spherical shape (one dimensional), irregular shape (multi-dimensional) under different boundary conditions
    • effect internal heat generation due to respiration
    • effect of evaporative cooling
    • effect of condensation
  • Cooling of bulk loads of fruits and vegetables
    • methods
    • computer simulation
  • Finite element analysis
    • fundamentals of finite element method
    • analyses using ANSYS software
  • Freezing of food products
    • simplified equations
    • migration isotherm method
    • numerical simulation methods
  • Drying of agricultural products
    • thin-layer equations
    • the log model
    • computer simulation of deep-bed drying

Grading

Grading Method Percentage
Homework 30%
Midterm exam 35%
Final exam 35%

Academic Honesty

As a student at the University of Florida, you have committed yourself to uphold the Honor Code, which includes the following pledge: “We, the members of the University of Florida community, pledge to hold ourselves and our peers to the highest standards of honesty and integrity.”  You are expected to exhibit behavior consistent with this commitment to the UF academic community, and on all work submitted for credit at the University of Florida, the following pledge is either required or implied: "On my honor, I have neither given nor received unauthorized aid in doing this assignment." 
 
It is assumed that you will complete all work independently in each course unless the instructor provides explicit permission for you to collaborate on course tasks (e.g. assignments, papers, quizzes, exams). Furthermore, as part of your obligation to uphold the Honor Code, you should report any condition that facilitates academic misconduct to appropriate personnel. It is your individual responsibility to know and comply with all university policies and procedures regarding academic integrity and the Student Honor Code.  Violations of the Honor Code at the University of Florida will not be tolerated. Violations will be reported to the Dean of Students Office for consideration of disciplinary action. For more information regarding the Student Honor Code, please see: http://www.dso.ufl.edu/sccr/process/student-conduct-honor-code.  

UF Counseling Services

Resources are available on-campus for students having personal problems or lacking clear career and academic goals which interfere with their academic performance. These resources include:

  1. University Counseling Center, 301 Peabody Hall, 392-1575, personal and career counseling;
  2. Student Mental Health, Student Health Care Center, 392-1171, personal counseling;
  3. Center for Sexual Assault/Abuse Recovery and Education (CARE), Student Health Care Center, 392-1161, sexual assault counseling;
  4. Career Resource Center, Reitz Union, 392-1601, career development assistance and counseling.