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This book describes the physical microenvironment of living organisms. It presents a simplified discussion of heat and mass transfer models and applies them to exchange processes between organisms and their surroundings. Emphasis is placed on teaching the student how to calculate actual transfer rates, rather than just studying the principles involved. Numerous examples are provided to illustrate many of the principles, and problems are included at the end of each chapter to help the student develop skills in using the equations and to gain an understanding of modern environmental biophysics. The book is an engineering approach to environmental biology.
This innovative study presents concepts and problems in soil
physics, and provides solutions using original computer programs.
It provides a close examination of physical environments of soil,
including an analysis of the movement of heat, water and gases. The
authors employ the programming language Python, which is now widely
used for numerical problem solving in the sciences. In contrast to
the majority of the literature on soil physics, this text focuses
on solving, not deriving, differential equations for transport.
Using numerical procedures to solve differential equations allows
the solution of quite difficult problems with fairly simple
mathematical tools. Numerical methods convert differential into
algebraic equations, which can be solved using conventional methods
of linear algebra. Each chapter introduces a soil physics concept,
and proceeds to develop computer programs to solve the equations
and illustrate the points made in the discussion. Problems at the
end of each chapter help the reader practise using the concepts
introduced. The text is suitable for advanced undergraduates,
graduates and researchers of soil physics. It employs an open
source philosophy where computer code is presented, explained and
discussed, and provides the reader with a full understanding of the
solutions. Once mastered, the code can be adapted and expanded for
the user's own models, fostering further developments. The Python
tools provide a simple syntax, Object Oriented Programming
techniques, powerful mathematical and numerical tools, and a user
friendly environment.
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