Related Experiment Video
Updated: Feb 6, 2026
10:26
Fabrication and Characterization of Superconducting Resonators
Published on: May 21, 2016
11.9K
Impedance Pumping and Resonance in a Multi-Vessel System
Victor Zislin1, Moshe Rosenfeld2
1School of Mechanical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel. victorzislin@gmail.com.
Bioengineering (Basel, Switzerland)
|August 12, 2018
Summary
Impedance pumping, a valve-less flow generation method, effectively creates net flow (NFR) in compliant vessels. This study demonstrates its successful application to multi-vessel networks, including cardiovascular systems, by optimizing resonance and actuation parameters.
Area of Science:
- Biomedical Engineering
- Fluid Dynamics
- Cardiovascular Physiology
Background:
- Impedance pumping generates flow in compliant vessels without internal mechanisms like valves or blades.
- Previous studies focused on single vessels, highlighting the importance of resonance and actuation parameters for optimal flow.
- Extending impedance pumping to complex networks, such as the cardiovascular system, presents new challenges and opportunities for flow control.
Purpose of the Study:
- To investigate the efficacy of impedance pumping in generating net flow (NFR) within networks of multiple compliant vessels.
- To determine the optimal operating conditions, particularly resonance frequencies and actuation parameters, for impedance pumping in multi-vessel systems.
- To explore the potential application of impedance pumping principles for flow control in cardiovascular systems.
Main Methods:
- Numerical modeling of fluid flow using the one-dimensional approximation of the Navier-Stokes equations.
- Simulation of two network configurations: three and five compliant vessels.
- Identification of natural frequencies and exploration of NFR dependence on actuation frequency, actuator location, amplitude, width, duty cycle, and phase lag.
Main Results:
- Impedance pumping operates most effectively in resonance mode for multi-vessel networks, similar to single vessels.
- Significant net flow rates (NFR) can be generated and manipulated by adjusting actuation parameters.
- The study identified optimal parameter settings for maximizing NFR in the simulated vessel networks.
Conclusions:
- Impedance pumping is a viable mechanism for generating flow in complex, multi-vessel compliant systems.
- The principles of impedance pumping can be tuned by various parameters to achieve significant and controllable net flow.
- These findings suggest promising applications for impedance pumping in cardiovascular flow control and related biomedical engineering fields.
More Related Videos
Related Concept Videos
02:52Resonance
65.7K
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N-O and N=O bonds.
65.7K
01:30ATP Driven Pumps III: V-type Pumps
4.9K
V-type pumps are ATP-driven pumps found in the vacuolar membranes of plants, yeast, endosomal and lysosomal membranes of animal cells, plasma membranes of a few specialized eukaryotic cells, and some prokaryotes. They are also known as the V1Vo-ATPase, that couple ATP hydrolysis to transport protons against a concentration gradient.
The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
4.9K
01:34ATP Driven Pumps II: P-type Pumps
6.4K
The P-type pumps are a large family of integral membrane transporter ATPases. They are divided into five major types based on substrate specificity, from I to V.
A typical P-type pump has three cytosolic domains: nucleotide-binding (N), phosphorylation (P), and activator (A) domains. These domains are connected to the membrane-spanning helices by short amino acid segments. ATP hydrolysis and covalent phosphoenzyme intermediate formation are crucial parts of the catalytic cycle. At the highly...
A typical P-type pump has three cytosolic domains: nucleotide-binding (N), phosphorylation (P), and activator (A) domains. These domains are connected to the membrane-spanning helices by short amino acid segments. ATP hydrolysis and covalent phosphoenzyme intermediate formation are crucial parts of the catalytic cycle. At the highly...
6.4K
01:21Impedance Combination
756
Consider a string of christmas lights, each bulb symbolizing an impedance element. In this series configuration, the flow of electric current remains uniform across every component. This behavior aligns with Kirchhoff's Voltage Law (KVL), which asserts that the total impedance in such a setup equals the sum of individual impedances—akin to resistors in series. It follows that the voltage from the power source is distributed proportionally among these components, adhering to the voltage...
756
01:13Pumped Concrete
395
Concrete in large quantities can be pumped across long distances for placing in inaccessible sites. This system comprises a hopper that receives concrete from a mixer, a pump to propel the concrete, and pipelines that facilitate its delivery.
For direct-acting pumps, the concrete enters the pump via the inlet valve under the action of gravity and suction created by the movement of the piston. This concrete is then forced into the pipeline and out through the outlet valve by the forward movement...
For direct-acting pumps, the concrete enters the pump via the inlet valve under the action of gravity and suction created by the movement of the piston. This concrete is then forced into the pipeline and out through the outlet valve by the forward movement...
395
01:23Impedances and Admittance
1.9K
In the realm of AC circuits, passive circuit elements like resistors, inductors, and capacitors take on a different character when characterized by phasor voltage and current. Their behavior is expressed through impedance, a vital concept in AC circuit analysis.
Impedance is a measure of resistance to sinusoidal current flow in an AC circuit. Unlike their behavior in DC circuits, where inductors appear as short circuits and capacitors as open circuits, the behavior of these components in AC...
Impedance is a measure of resistance to sinusoidal current flow in an AC circuit. Unlike their behavior in DC circuits, where inductors appear as short circuits and capacitors as open circuits, the behavior of these components in AC...
1.9K