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19 articles

Surge & Transients

Technical articles on water hammer, transient analysis, surge protection, and hydropneumatic surge vessels.

Wave Speed in Surge Analysis: The Number That Sets the Surge but Barely Moves the Surge Vessel
Wave Speed in Surge Analysis: The Number That Sets the Surge but Barely Moves the Surge Vessel
37 min read  →
The Differential Orifice: Why a Surge Vessel Should Empty Freely and Refill Slowly
The Differential Orifice: Why a Surge Vessel Should Empty Freely and Refill Slowly
36 min read  →
Bladder, Diaphragm or Air-over-Water: Choosing the Surge Vessel Type
Bladder, Diaphragm or Air-over-Water: Choosing the Surge Vessel Type
37 min read  →
One-Way Surge Tanks at the Knee: Cutting the Surge Vessel by Nearly Two-Thirds
One-Way Surge Tanks at the Knee: Cutting the Surge Vessel by Nearly Two-Thirds
33 min read  →
Surge Relief Valve Sizing: What a Valve at the Pump Can and Cannot Protect
Surge Relief Valve Sizing: What a Valve at the Pump Can and Cannot Protect
32 min read  →
Pump Inertia and the Flywheel: When Spinning Mass Can Replace a Surge Vessel
Pump Inertia and the Flywheel: When Spinning Mass Can Replace a Surge Vessel
33 min read  →
Choosing Surge Protection: Vessel, One-Way Tank, Relief Valve or Flywheel on the Same Pipeline
Choosing Surge Protection: Vessel, One-Way Tank, Relief Valve or Flywheel on the Same Pipeline
36 min read  →
Surge Scenarios in Pumping Stations — and Which One Governs the Design
Surge Scenarios in Pumping Stations — and Which One Governs the Design
11 min read  →
Computing a Transient Simulation in Bentley HAMMER: A Step-by-Step Workflow
Computing a Transient Simulation in Bentley HAMMER: A Step-by-Step Workflow
9 min read  →
Tips for Using HAMMER to Understand Interesting Transient Results
Tips for Using HAMMER to Understand Interesting Transient Results
12 min read  →
Effect of Control Valve Closure Time on Water Hammer Intensity
Effect of Control Valve Closure Time on Water Hammer Intensity
15 min read  →
Sizing the Hydropneumatic Surge Vessel in Water Transmission Pipelines
Sizing the Hydropneumatic Surge Vessel in Water Transmission Pipelines
37 min read  →
The Pre-Charge Pressure of the Surge Vessel — How One Number Changes Everything
The Pre-Charge Pressure of the Surge Vessel — How One Number Changes Everything
41 min read  →
Mastering Control Valve Transients in Bentley HAMMER: FCV vs. PRV
Mastering Control Valve Transients in Bentley HAMMER: FCV vs. PRV
10 min read  →
Demystifying Boundary Conditions: Reservoir vs. Tank in Bentley HAMMER
Demystifying Boundary Conditions: Reservoir vs. Tank in Bentley HAMMER
9 min read  →
Beyond Static Design: Integrating Transient Analysis with SCADA for Smart Pipelines
Beyond Static Design: Integrating Transient Analysis with SCADA for Smart Pipelines
9 min read  →
Strategic Air Admission in Water Transmission Networks: A Dual Perspective
Strategic Air Admission in Water Transmission Networks: A Dual Perspective
8 min read  →
From Modeling to Procurement: A Guide to Check Valve Analysis in Bentley HAMMER
From Modeling to Procurement: A Guide to Check Valve Analysis in Bentley HAMMER
5 min read  →
Surge Analysis: An Essential Risk Mitigation Strategy for Pressurized Pipelines
Surge Analysis: An Essential Risk Mitigation Strategy for Pressurized Pipelines
5 min read  →
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