Pipes and Fittings

Conduits for fluid transport

Use these blocks to model pipe flow and resistances in the thermal liquid domain.

Simscape Blocks

Elbow (TL)	Pipe turn in a thermal liquid network (Since R2022a)
Local Resistance (TL)	Pipe resistance in a thermal liquid network (Since R2022a)
Partially Filled Pipe (TL)	Pipe with variable liquid volume in an thermal liquid system (Since R2022a)
Pipe (TL)	Closed conduit that transports fluid between thermal liquid components
Pipe Bend (TL)	Pipe bend segment in a thermal liquid network (Since R2022a)
Sudden Area Change (TL)	Sudden expansion or contraction in flow area
T-Junction (TL)	Three-way junction in a thermal liquid system (Since R2022a)
Cross-Junction (TL)	Cross-junction in a thermal liquid network (Since R2022b)
Y-Junction (TL)	Y-junction in a thermal liquid system (Since R2023a)

Featured Examples

Hydraulic Oil System with Thermal Control

A hydraulic oil system with a thermal control using Simscape™ Fluids™ Thermal Liquid blocks. The hydraulic oil system consists of an oil storage tank represented by the Tank (TL) block with two inlets, a pump represented by a Mass Flow Rate Source (TL) block, and pipelines represented by Pipe (TL) block.

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Aircraft Fuel Supply System with Three Tanks

Model an aircraft fuel supply system consisting of three tanks and an engine.

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Dishwasher Fault Analysis

Model a dishwasher and introduce a fault in its operation. Observe the system response when a fault occurs in the water heater during operation. The electric motor switches off, and the dishwasher aborts operation.

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Reciprocal Actuator with Differential Cylinders

A double-acting actuator with differential cylinders. The pump output is connected to cylinder B of the actuator while cylinder A of the actuator can be connected to either the pump or the reservoir through the 3-way directional valve. When cylinder A is connected to the pump, pressures at both cylinders become equal. Because of the larger effective piston area in cylinder A, the interface force in cylinder A is larger than that of in cylinder B which causes the piston to extend. When cylinder A is connected to the reservoir, the piston starts to retract. The 3-way directional valve is controlled by a sinusoidal signal to achieve repeating reciprocal motion in the actuator.

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4-Way Directional Valve with Mechanical Effects

Compares two 4-way directional valves, one with mechanical components to account for spool mass, valve spring and damper and one without (ideal valve). The input force to both valves is a sine wave. The operation of two valves are compared for different displacement frequencies, valve spring stiffness and damper coefficients.

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Electric Vehicle Thermal Management

Model the thermal management system of a battery electric vehicle.

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Engine Cooling System

Model an engine cooling system with an oil cooling circuit.

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House Heating System

Model a simple house heating system. The model contains a heater, a controller, and a house structure with four radiators and four rooms. Each room exchanges heat with the environment through its exterior walls, roof, and windows. Each path is simulated as a combination of a thermal convection, thermal conduction, and the thermal mass. It is assumed that heat is not transferred internally between rooms. The heater consists of a furnace, a boiler, an accumulator, and a pump to circulate hot water in the system. The controller starts admitting fuel into the furnace if the overall average temperature of rooms falls below 21 degree C and it stops if the temperature exceeds 25 degree C. The simulation calculates the heating cost and indoor temperatures.

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Photovoltaic Thermal (PV/T) Hybrid Solar Panel

Model the cogeneration of electrical power and heat using a hybrid PV/T solar panel. The generated heat is transferred to water for household consumption.

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Liquid Air Energy Storage System

Models a grid-scale energy storage system based on cryogenic liquid air. When there is excess power, the system liquefies ambient air based on a variation of the Claude cycle. The cold liquid air is stored in a low-pressure insulated tank until needed. When there is high power demand, the system expands the stored liquid air to produce power based on the Rankine cycle.

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Vehicle HVAC System

Models the heating and cooling system of a passenger car. The cabin is represented as a volume of moist air exchanging heat with the external environment. The blower drives moist air through the evaporator, blend door, and heater core before returning to the cabin. The blend door controls the amount of air flow through the heater core. The recirculation door controls whether air is brought in from the external environment or from within the cabin.

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