Fluid Mechanics_
Key Concepts
Keyand
Concepts
Definitions
and for
Definitions
Studentsfor
_ Students
Study Guide,
_ Study
Practice
Guide,
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Practice &Questions
Exam Review
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2026_2027.pdf
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Fluid Mechanics: Key Concepts and
Definitions for Students | Study Guide,
Practice Questions & Exam Review
2026/2027
Fluid Mechanics_
Fluid Mechanics_
Key Concepts
Keyand
Concepts
Definitions
and for
Definitions
Studentsfor
_ Students
Study Guide,
_ Study
Practice
Guide,
Questions
Practice &Questions
Exam Review
& Exam
2026_2027
Review 2026_2027.pdf 1 of 14
, Fluid Mechanics_ Key Concepts and Definitions for Students.pdf Fluid Mechanics_ Key Concepts and Definitions for Students.pdf Page 2 of 14
Solid vs. Fluid
A solid maintains a fixed shape and resists shear deformation elastically, while a fluid (liquid
or gas) deforms continuously under any applied shear stress, no matter how small.
Liquid
A fluid phase with a definite volume but no definite shape; it takes the shape of its container,
forms a free surface, and is nearly incompressible.
Gas
A fluid phase with neither definite volume nor definite shape; it expands to fill its entire
container and is readily compressible.
Fluid Mechanics_ Key Concepts and Definitions for Students Fluid Mechanics_ Key Concepts and Definitions for Students.pdf 2 of 14