Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Flow Table Test01:12

Flow Table Test

149
The flow table test is an established method used to assess the workability of concrete, particularly useful for evaluating highly flowable concrete mixes. This test employs an apparatus that consists of a wooden board topped with a steel plate, collectively weighing 35 pounds. The board is connected to a base via a hinge and measures 27.6 inches on each side.
Concrete is placed within a truncated cone mold that is 8 inches high with an 8-inch base diameter and a 5-inch top diameter. The...
149
Typical Model Studies01:30

Typical Model Studies

358
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
358
Rapidly Varying Flow01:24

Rapidly Varying Flow

60
Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
60
Turbulent Flow: Problem Solving01:09

Turbulent Flow: Problem Solving

128
Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures...
128
Laminar Flow: Problem Solving01:24

Laminar Flow: Problem Solving

175
Laminar flow occurs when a fluid moves smoothly in parallel layers with minimal mixing and turbulence. In fluid mechanics, ensuring laminar flow within a pipe is essential for precise control of flow characteristics, especially in engineering applications. The key factor in determining whether flow remains laminar is the Reynolds number, a dimensionless quantity that depends on the fluid's velocity, density, viscosity, and the pipe's diameter. A Reynolds number of 2100 or lower...
175
Design Example: Creating a Hydraulic Model of a Dam Spillway01:21

Design Example: Creating a Hydraulic Model of a Dam Spillway

164
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
164

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The Dynamics of Pharyngeal Shortening in Healthy Swallowing: Effects of Sex, Age, Bolus Volume and Consistency.

Journal of oral rehabilitation·2026
Same author

Swallowing After Open Partial Horizontal Laryngectomy Type IIa: A Quantitative Videofluoroscopic Analysis Using the Analysis of Swallowing, Physiology, Events, Kinematics, and Timing.

Journal of speech, language, and hearing research : JSLHR·2026
Same author

Minimally invasive surgery in the correction of recurrent hallux valgus: a case series with 2‑year follow‑up.

BMC musculoskeletal disorders·2026
Same author

Optimizing Patient Positioning to Improve Orientation, Ergonomics, and Standardization in Percutaneous Forefoot Surgery: A Technical Tip.

Foot & ankle orthopaedics·2026
Same author

Increased Risk of Recurrence in Severe Hallux Valgus Associated With Inability to Passively Correct Deformity Prior to Surgery: A Comparative Study of Transverse vs Chevron Osteotomy Minimally Invasive Surgery Techniques.

Foot & ankle orthopaedics·2026
Same author

Short-term Outcomes of Percutaneous Zadek Osteotomy for Insertional Achilles Tendinopathy in Cavus vs Non-Cavus Feet: A Comparative Multi-Center Study.

Foot & ankle orthopaedics·2026

Related Experiment Video

Updated: Jun 28, 2025

Continuous Flow Chemistry: Reaction of Diphenyldiazomethane with p-Nitrobenzoic Acid
07:06

Continuous Flow Chemistry: Reaction of Diphenyldiazomethane with p-Nitrobenzoic Acid

Published on: November 15, 2017

11.4K

Validation of the IDDSI funnel for liquid flow testing.

Catriona M Steele1,2,3, Qian Liu4, Haakon MacCallum1

  • 1International Dysphagia Diet Standardisation Initiative, Vancouver, Canada.

Journal of Texture Studies
|April 13, 2024
PubMed
Summary

The International Dysphagia Diet Standardisation Initiative (IDDSI) flow test now has a funnel device, addressing global accessibility and usability issues. This new funnel shows 92% agreement with the original syringe test for classifying liquid thickness.

Keywords:
deglutition disordersdysphagiathicknessviscosity

More Related Videos

Preparation of Free-Surface Hyperbolic Water Vortices
04:35

Preparation of Free-Surface Hyperbolic Water Vortices

Published on: July 28, 2023

2.6K
In Vitro Model of Physiological and Pathological Blood Flow with Application to Investigations of Vascular Cell Remodeling
07:30

In Vitro Model of Physiological and Pathological Blood Flow with Application to Investigations of Vascular Cell Remodeling

Published on: November 3, 2015

9.6K

Related Experiment Videos

Last Updated: Jun 28, 2025

Continuous Flow Chemistry: Reaction of Diphenyldiazomethane with p-Nitrobenzoic Acid
07:06

Continuous Flow Chemistry: Reaction of Diphenyldiazomethane with p-Nitrobenzoic Acid

Published on: November 15, 2017

11.4K
Preparation of Free-Surface Hyperbolic Water Vortices
04:35

Preparation of Free-Surface Hyperbolic Water Vortices

Published on: July 28, 2023

2.6K
In Vitro Model of Physiological and Pathological Blood Flow with Application to Investigations of Vascular Cell Remodeling
07:30

In Vitro Model of Physiological and Pathological Blood Flow with Application to Investigations of Vascular Cell Remodeling

Published on: November 3, 2015

9.6K

Area of Science:

  • Dietetics
  • Medical Devices
  • Swallowing Disorders

Background:

  • The International Dysphagia Diet Standardisation Initiative (IDDSI) flow test, introduced in 2017, classifies liquid thickness using a syringe.
  • Barriers to the IDDSI flow test include syringe accessibility, variations in syringe geometry, and complex sample loading.

Purpose of the Study:

  • To introduce and evaluate the IDDSI funnel, a novel device designed to overcome the limitations of the original IDDSI flow test syringe.
  • To compare the performance of the IDDSI funnel against the standard BD 303134 syringe for classifying liquid thickness.

Main Methods:

  • The IDDSI funnel, combining syringe geometry with a kitchen funnel, was developed for easier sample loading.
  • IDDSI flow test results were compared between the BD 303134 syringe and the IDDSI funnel across various fluids and temperatures.

Main Results:

  • The IDDSI funnel demonstrated excellent correspondence with the syringe reference test.
  • Complete agreement in IDDSI level classifications was achieved in 92% (67/73) of test conditions.
  • The mean difference in residual liquid between the devices was minimal (0.2 or 2% full scale).

Conclusions:

  • The IDDSI funnel effectively addresses the accessibility and usability barriers associated with the original IDDSI flow test.
  • The IDDSI funnel provides reliable and consistent results, comparable to the established syringe method for dysphagia diet standardization.