HDS395 - Fluid Mechanics and Hydraulic Calculation

Semester | |

School | |

Last revision date | 2017-05-29 00:39:42.673 |

Last review date | 2017-07-17 00:16:17.878 |

**
Subject Title
**

Fluid Mechanics and Hydraulic Calculation

**
Subject Description
**

This subject covers classic fluid mechanics and how to apply hydraulic calculation techniques to the design of sprinkler systems using NFPA 13 standards. Computer software will be used to predict system hydraulic performance.

**
Credit Status
**

One credit in the Fire Sprinkler Design Certificate

**
Learning Outcomes
**

Upon successful completion of this subject the student will be able to:

- Work in both US Customary and S.I. units.
- Define mass, weight and pressure as they apply to Pascal’s law.
- Explain the difference between absolute and gauge pressure, and the operation of a Bourdon tube pressure gauge, a manometer and a barometer.
- Calculate specific weight, density, viscosity, specific gravity and pressure due to elevation, for liquids.
- Calculate volume flow rates for liquids and forces generated by hose streams.
- Use Bernoulli’s equation to illustrate conservation of energy and solve simple fluid problems.
- Use the General Energy equation to accommodate fluid energy additions and losses.
- Use the Darcy-Weisbach method and Hazen-Williams formula to determine energy losses due to friction in pipes.
- Determine a design area for NFPA 13 applications and calculate minimum sprinkler flow.
- Use equivalent lengths to accommodate fittings and valves.
- Determine the hydraulic performance of simple tree systems using NFPA approved calculation sheets.
- Plot hydraulic results on a water supply diagram.
- Use computer software to calculate systems.

**
Cheating and Plagiarism
**

Each student should be aware of the College's policy regarding Cheating and Plagiarism. Seneca's Academic Policy will be strictly enforced.

To support academic honesty at Seneca College, all work submitted by students may be reviewed for authenticity and originality, utilizing software tools and third party services. Please visit the Academic Honesty site on http://library.senecacollege.ca for further information regarding cheating and plagiarism policies and procedures.

**
Discrimination/Harassment
**

All students and employees have the right to study and work in an environment that is free from discrimination and/or harassment. Language or activities that defeat this objective violate the College Policy on Discrimination/Harassment and shall not be tolerated. Information and assistance are available from the Student Conduct Office at student.conduct@senecacollege.ca.

**
Accommodation for Students with Disabilities
**

The College will provide reasonable accommodation to students with disabilities in order to promote academic success. If you require accommodation, contact the Counselling and Disabilities Services Office at ext. 22900 to initiate the process for documenting, assessing and implementing your individual accommodation needs.

**
Prerequisite(s)
**

SPR 195 or equivalent. A Windows operating system is required to use the SprinkCad software.

**
Topic Outline
**

**INTRODUCTION TO FLUID MECHANICS**

- US Customary and S.I. Units
- Mass and Weight
- Pressure
- Pascal’s Law
- Absolute and Gauge Pressure
- Specific Weight, Density, and Specific Gravity
- Liquid Viscosity

**FLUID STATICS**

- Pressure due to Elevation
- Piezometers and Manometers
- Bourdon Tube Pressure Gauge
- Atmospheric Pressure
- Barometers

**FLUID FLOW**

- Volume Flow Rates
- Continuity of Flow
- Force and Flowing Liquids
- Pipe and Tube

**BERNOULLI’S EQUATION**

- Fluid Energy and Conservation
- Bernoulli’s Equation
- Torricelli’s Theorem
- The Concept of Fluid “Head”

**ENERGY LOSSES AND ADDITIONS**

- The General Energy Equation
- Energy Losses and Additions
- Laminar and Turbulent Flow
- Reynolds Number
- Friction Factor
- The Moody Diagram
- The Darcy-Weisbach Method
- The Hazen-Williams Formula

**SPRINKLER HYDRAULICS**

- Determining a Design Area
- Minimum Sprinkler Flow
- Velocity Pressure
- Sprinkler K-Factors
- Equivalent Lengths
- The Velocity Formula

**SYSTEM CALCULATIONS**

- Using the Approved Calculation Sheet
- The First Calculation
- Including Velocity Pressure
- A Simple Tree System
- Branch Line K-Factors

**SYSTEM EXAMPLES**

- Offset Branch Lines
- Calculating a Remote Area
- A Simple Grid
- Pitched Roof Systems

**CALCULATIONS BY COMPUTER**

- Installation and use of SprinkCALC Software
- Examples

**
Mode of Instruction
**

Correspondence – independent learning with tutor support

**
Prescribed Texts
**

1. __Student Study Guide for HDS 395.__ Joseph w. Curry, Seneca College

2.

__NFPA 13, Standard for the Installation of Sprinkler Systems.__Current Edition, NFPA

**
Required Supplies
**

Students must have a Windows based computer. Windows Home Edition is not compatible. Student version of AutoCAD are available at reduced prices or may be obtained for free.

**
Promotion Policy
**

A+ | 90% to 100% |

A | 80% to 89% |

B+ | 75% to 79% |

B | 70% to 74% |

C+ | 65% to 69% |

C | 60% to 64% |

D+ | 55% to 59% |

D | 50% to 54% |

F | 0% to 49% (Not a Pass) |

OR | |

EXC | Excellent |

SAT | Satisfactory |

UNSAT | Unsatisfactory |

For further information, see a copy of the Academic Policy, available online (http://www.senecacollege.ca/academic-policy) or at Seneca's Registrar's Offices.

**
Modes of Evaluation
**

To obtain a passing grade for the subject, a student must complete and obtain a passing grade on all combined assignments and tests (term work) and also a passing grade on the final exam. 50% is a passing grade. For further information on evaluation and academic standing, see a copy of the Academic Policy. They are available at Seneca Registration offices.

Student competence of the subject matter as a whole will be measured by a final examination. The final grade will be computed according to the following:

Term Test: 20%

Final Exam: 30%