International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage

Multilingual Technical Dictionary (MTD)
<<    Browsing page 1 of 2    >>
Term No.Term Name/Term DescriptionAction
862
Channel storage, or Temporary storage or Wedge storage
1 – The additional volume of water contained in a channel reach as a result of inflow to the reach being greater than the channel can discharge immediately (Illustrated). 2 – See 5372......
Similar Terms
1589
Pedogenesis
The formation of soil from parent material.
Similar Terms
1708
Transitional soil
Soil intermediate in character between two different soils.
Similar Terms
1906
Legume
1 - A plant having the ability to extract nitrogen from the atmosphere and fix it in non-gaseous form, by virtue of symbolic bacteria contained in nodules on the plant`s root. Leguminous plants are often grown as forage or green manure crop, and include such as various clovers, alfalfa, soyabeans.  2 – See 9329......
Similar Terms
2095
Transitional moor
Moor intermediate in character between raised moss and lowmoor.
Similar Terms
2202
Endogenic drainage
Surface water that results from precipitation within the arid region.
Similar Terms
2536
Transition filter
A component of an earth dam section (with core) consisting of an intermediate grade of material placed between the core and the shells to function like a filter, preventing lateral movement of fines from the core (illustrated)......
Similar Terms
2537
Transition section
The part of the section of an earth dam occupied by the transition filters.
Similar Terms
2678
Tunnel portal transitions
Structural arrangement at the inlets and outlets of tunnels. At the inlet this arrangement changes the shape of the flow area from the shape and section of the approaching channel into the normal tunnel section and at the outlet from the normal tunnel section to the exit channel section......
Similar Terms
2778
Upper limb, or Upper leg
The portion of the hood from the inlet lip to the crown (illustrated).
Similar Terms
2781
Lower limb, or Lower leg
The portion of the hood between the crown and the exit lip (illustrated).
Similar Terms
3035
Transition
1 - The change from laminar to turbulent flow occurring in some limited region of the field of flow. 2 - See 3383 and 5438......
Similar Terms
3154
Transition wall
Wall positioned between normal section and flumed section of a structure for smooth transition of flow.
Similar Terms
3383
Transition, Hydraulic transition, Curved splayed transition, Curved tapered transition, Straight splayed transition, Straight tapered transition, Cylinder-quadrant transition, Conical frustum transition Conversion, Straight warped transition (illustrated), Curved warped transition, Streamlined transition, Valve transitions, Inlet transition, Approach transition, Entrance transition, Upstream transition, Upper transition, Outlet transition, Departure transition, Exit transition, Downstream transition, Lower transition, Tunnel transition, Supercritical transitions, One-dimensional supercritical transitions, or Two-dimensional supercritical transitions
1 - A length of conduit or channel wherein the cross-sectional shape is gradually changed from that of the conduit or channel upstream to that of the conduit or channel downstream. The transitions are characterized by adjectives bearing on their length (e.g. short, long, sudden, gradual), geometrical shape of the side walls (e.g. splayed, straight,.....
Similar Terms
3384
Transitions, or Compound transition
A combination of transitions, where more than one form is involved (illustrated).
Similar Terms
3385
Transition section
1 - That reach of the conduit in which transition/transitions is/are confined. 2 - See 2537.
Similar Terms
3387
Transition length
The length of the transition measured along the conduits, (i) longitudinal axis in case of closed conduits, and (ii) centre line of the bed measured along the direction of flow in case of open conduits......
Similar Terms
3388
Side transitions
The portions of the sides of transitions in an open conduit.
Similar Terms
3389
Transition curve
Curve of alignment of the transition, i.e. parabolic, elliptical, circular, compound.
Similar Terms
3390
Transition-curve length, Transition face length, Transition surface length, or Curved transition length
The length measured along the transition curve at any elevation. Also referred to as `transition face length` or `transition surface length`......
Similar Terms
3391
Transition element
A small length along a transition curve.
Similar Terms
3397
Warped transition
A transition in which side walls are warped.
Similar Terms
3398
`S` warped transition, or Reverse warped transition
A warped transition in which alignment of the side wall is of `S` shape, and may not necessarily be streamlined (illustrated)......
Similar Terms
3399
Broken back, or Dog leg
It is the intersection of the vertical and sloping plane surfaces on the sides of the transition.
Similar Terms
3400
Broken-back transition, Dog leg transition, or Wedge transition
A transition having a broken back (illustrated).
Similar Terms
<<    Browsing page 1 of 2    >>