Name: pipe flow paths in series and parallel
Uploaded: 2025-02-13T15:43:35.000Z
Duration: 1 min 21 s
Channel: JoVE

Multiple pipe systems consist of interconnected pipes that regulate fluid flow across complex networks.
They can be arranged in series, parallel, loop, or network configurations, each offering distinct flow dynamics.
In series systems, fluid flows sequentially through each pipe segment, maintaining a constant flow rate. The total head loss from point A to point B is the sum of head losses across each segment.
Parallel systems allow fluid to divide across multiple paths, where the total flow rate equals the sum of individual path flow rates. The pressure drop remains constant across all paths, so every fluid particle experiences the same head loss, regardless of its route.
In loop systems, the flow rate in one pipe is balanced by the sum of flow rates in the other two connected pipes.
Finally, network systems consist of complex, interconnected pipes with multiple inlets and outlets, allowing flexible flow directions for efficient fluid transport.
Multiple Pipe systems are widely applied in municipal water supply, deepwater pipelines, and industrial cooling networks.

multiple pipe systems

Multiple Pipe Systems

Multipipe systems consist of complex configurations of interconnected pipes designed to transport fluids efficiently across intricate networks. They are essential in engineering applications requiring precise control over flow distribution, pressure, and head loss. They are categorized into series, parallel, loop, and network configurations, each distinguished by unique flow characteristics and applications.
Series Configuration
In a series configuration, fluid flows sequentially from one pipe segment to the next, maintaining a constant flow rate throughout. This setup means each segment experiences the same flow rate, although head losses accumulate progressively across each section. The total head loss from an entry point A to an exit point B is the cumulative sum of head losses in each pipe, governed by the Darcy-Weisbach equation for head loss or similar empirical relationships. This configuration suits applications requiring a consistent flow rate along a fixed path, such as in specific water treatment processes.
Parallel Configuration
Parallel multipipe systems divide fluid flow across multiple paths, enabling a higher overall flow rate and reducing resistance across the network. Here, the total flow rate is the sum of the individual flow rates in each branch. However, a critical feature of parallel systems is that all paths experience the same pressure drop. Consequently, fluid particles in each path encounter identical head losses, regardless of the path taken. This arrangement is effective in systems needing efficient fluid distribution, such as in heating and cooling systems, where multiple paths ensure temperature control across large areas.
Loop and Network Configurations
In loop systems, the flow rate within one pipe is balanced by the combined flow rates of the other connected pipes, enabling fluid redistribution based on demand changes or localized resistance variations, such as in urban water distribution systems. Network configurations represent the most complex setup, involving numerous interconnected pipes with multiple inlets and outlets,such as in oil and gas pipeline networks. This flexibility allows for multiple flow directions, enhancing transport efficiency and adaptability to dynamic system demands.
Applications of Multipipe Systems
Multipipe systems are indispensable in several engineering sectors. Municipal water supply networks often use network configurations to ensure consistent pressure and reliable delivery across urban areas. In deepwater oil and gas pipelines, multipipe systems help manage the challenging pressures and flow conditions of underwater environments. Additionally, industrial cooling systems benefit from the controlled fluid distribution provided by parallel configurations, which improve heat dissipation and maintain optimal temperatures in manufacturing processes.

Multiple pipe systems consist of interconnected pipes that regulate fluid flow across complex networks.
They can be arranged in series, parallel, loop, or ...

Education

JoVE Core

Civil Engineering

Unit 1

Flow in Pipes

KEY TERMS AND CONCEPTS

pipe flow paths in series and parallel

Multiple pipe systems move fluids through connected pipe paths in engineering networks. They help control flow distribution, pressure, and head loss. These systems are grouped into series, parallel, loop, and network configurations, and each one behaves differently.

In a series configuration, fluid passes through one pipe segment after another. The flow rate stays the same through every segment. Head loss builds up across the path, so the total loss from entry point A to exit point B is the sum of the losses in each pipe. This setup is useful when a fixed path needs a steady flow rate, such as in some water treatment processes.

Parallel configurations split the fluid into multiple paths. The total flow rate is the sum of the flow rates in the branches, so the system can move more fluid with less resistance. A key feature is that each path has the same pressure drop, so the head loss is the same no matter which branch the fluid takes. This arrangement is useful in heating and cooling systems, where multiple paths help control temperature across a larger area.

Loop systems balance flow between connected pipes. If demand changes or one section has more resistance, the flow can shift through the loop to redistribute the fluid. Network configurations are even more complex. They include many connected pipes with multiple inlets and outlets, such as in oil and gas pipeline networks.

Multipipe systems are important in many engineering settings. Municipal water supply networks use network layouts to help keep pressure steady and deliver water reliably across cities. Deepwater oil and gas pipelines must manage difficult pressure and flow conditions underwater. Industrial cooling systems also use parallel flow paths to improve heat dissipation and keep manufacturing equipment at the right temperature.

Pipe Flow Paths in Series and Parallel

general characteristics of pipe flow i

Pipe Flow Regimes and Reynolds Number

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general characteristics of pipe flow ii

Pipe Entrance Length and Pressure Changes

Pipe flow changes as fluid moves from the pipe entrance to a fully developed state. At the entrance, the velocity profile is still adjusting. Viscous effects create a boundary layer along the wall, and that layer grows until it fills the whole pipe cross-section. When the boundary layer merges across the pipe, the flow becomes fully developed. At that point, the velocity profile stays steady along the pipe length. The distance needed to reach this state is called the entrance length. It...

laminar flow

Pipe Flow Patterns and Pressure Loss

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laminar flow: problem solving

Pipe Size for Laminar Air Flow

Laminar flow in a pipe means the fluid moves in smooth, parallel layers with very little mixing or turbulence. In fluid mechanics, keeping flow laminar is important when engineers want precise control of flow behavior. The Reynolds number is the key value used to check this. It is a dimensionless number that depends on the fluid’s speed, density, viscosity, and the pipe’s diameter. A Reynolds number of 2100 or lower shows laminar flow. Higher values lead to turbulence. For air flowing through...

turbulent flow

Turbulent Flow in Pipes and Mixing

Turbulent flow is a fluid pattern with irregular changes in speed and pressure. It looks chaotic when compared with laminar flow, which moves in smooth, parallel layers with little mixing. In turbulent flow, the motion is highly irregular and three-dimensional. This behavior starts when the fluid speed becomes high enough to create instabilities in the velocity profile. Small disturbances, called turbulent spots, can appear at a critical speed. As the Reynolds number, a ratio of inertial...

turbulent flow: problem solving

Carbonation Flow and Reynolds Number

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major losses in pipes

Pipe Pressure Drop from Wall Friction

Pipe pressure drop from wall friction is a major loss in fluid flow. As a fluid moves through a pipe, friction along the pipe walls removes energy. That energy loss shows up as a drop in pressure. The size of the drop depends on the flow conditions and on the physical properties of both the fluid and the pipe. Flow in a pipe is often described as laminar or turbulent using the Reynolds number. This dimensionless number compares inertial forces with viscous forces in the fluid. In laminar flow,...

minor losses in pipes

Pipe Fittings and Valve Head Loss

Pipe fittings and valves can cause head loss in a pipe system. These losses happen when flow is disturbed by bends, expansions, entries, exits, and other components. The fluid loses energy because the flow becomes less steady and more turbulent. Valves are a major source of minor loss because they block or guide the fluid path. A closed valve or a partly closed valve adds resistance and creates turbulence. The amount of energy loss depends on the valve shape, its position, and the way the flow...

single pipe systems

Pipe Flow Problems by What You Know

Pipe flow problems are grouped by the information that is known and the result that needs to be found. In fluid mechanics, these are often called Type I, Type II, and Type III problems. Each type uses fluid properties, pipe details, and operating conditions to answer a different engineering question. In a Type I problem, the fluid density and viscosity are known. The pipe diameter, length, and surface roughness are also known. The flow rate or average velocity is given, and the goal is to find...

Multiple pipe systems move fluids through connected pipe paths in engineering networks. They help control flow distribution, pressure, and head loss. These systems are grouped into series, parallel, loop, and network configurations, and each one behaves differently. In a series configuration, fluid passes through one pipe segment after another. The flow rate stays the same through every segment. Head loss builds up across the path, so the total loss from entry point A to exit point B is the...

pipe flowrate measurement

Comparing Orifice, Nozzle and Venturi Meters

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pipe flowrate measurement: problem solving

pipe-flowrate-measurement-problem-solving

Spray Tank Pipe Flow Rate Calculation

Spray tank pipe flow rate calculation uses fluid mechanics to find how fast pesticide moves through a pressurized system. The tank is pressurized to 150 kPa and holds the liquid at a height of 0.80 meters. The liquid then travels through a 1.9 meter pipe with a diameter of 0.015 meters and an angle of 0.698 radians before reaching a 0.007 meter nozzle that sprays the pesticide. Accurate flow rate matters because the pesticide must be applied evenly across the plants. The first step is to find...

design example: designing a residential plumbing system

design-example-designing-a-residential-plumbing-system

Residential Plumbing Flow and Pressure Design

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key terms and concepts

Learn how series, parallel, loop, and network pipe systems control fluid flow, pressure, and head loss in water, cooling, and pipeline networks.

Pipe Flow Paths in Series and Parallel | JoVE K12

JoVE Core Civil Engineering offers a foundational exploration of essential construction materials such as bricks, stones, steel, wood, and concrete, along with fluid mechanics topics like flow over immersed bodies, open channel flow, and dimensional modeling. It also covers key surveying concepts, including leveling, traverse adjustments, curve design, topographic mapping, and geospatial technologies (GPS & GIS). Science-in-action videos showcase laboratory research on materials, fluids, and surveying practices in real-world engineering systems.

civil engineering

Pipe Flow Paths in Series and Parallel

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